I don’t use Carplay or AA so idk about that topic specifically.
I’m also not sure what Manet is given a quick search on the App Store. Ivory looks like it has quite some good reviews but at the same time, there are also plenty of ways to interact with Mastodon.
Apple Maps are good yes, but would that justify moving to Apple just for that? I’d still agree that GMaps are overall better or that Comaps is just fine for my personal use case.
Also, I just discovered but apparently you can simply access Apple Maps online?
If you put your privacy aside and want something cool but monthly paid, there is probably better apps too. 
Contact-less payment is also not a problem for me anymore since I’m using a physical bank card. I know, call me old-school
but I can definitely live without the need for NFC payments from my phone.
A nice classy wallet also doesn’t need to be recharged daily. 
Overall, I’m not sure if it’s me going on a detox regarding my phone usage maybe? I would have not mind a dumb phone even, but it’s quite unrealistic and a phone is (unfortunately) still needed as of today.
So I’d say that given the amount of FOSS apps available, I don’t need to look back.
Some apps are good but they might not apply to me or the friction is just too big for basics: like a good alarm or weather app on iOS without being bloated with ads. 
The store for the Apple Watch was also a BIG disappointment and the fact that basic stuff just doesn’t work well at all.
You can feel that the grass is greener on the other side. Might be the case for you and I would still recommend you to pull the trigger, pay the premium and try it for yourself.
But I’d say that for me, those were deal breakers by a long shot:
- awful battery life (when comparing iPhone 15 Pro vs Pixel 9a), like low refresh rate + low brigthness + power saving mode barely was enough for me given 1 day of use
- cruising at 3/4 days currently with my Pixel, same comparable settings
- UX. People do praise Apple a lot for this one. I’m still not sure why, MacOS is quite bad but the iPhone is even more annoying on that regard. Swipes to go back are inconsistent, there is fluff everywhere and it is overall just slow to go from point A to point B.
- like going into the settings with 6+ steps/prompts to disable GPS, for real??
- things work great overall, but I wouldn’t say there are crazy hard to pull out by yourself hence no, universal copy, iCloud and consorts are not a huge sale
- moreover, some feature are just straight lies, for example this is not available in
for some reason…while it was sold during a Keynote and was one of the biggest reasons I wanted to give the Apple garden a try 
- I’m also fine self-hosting my own stuff and not being locked-down into an ecosystem where I need to pay because of being held hostage with my photos or not being able to simply share a file to an Android user because…standard protocols like Bluetooth are has-been in 2025?

- price also, pixel 9a can be found for 350€ while I paid 1500€ for the iPhone, is the iPhone 4x better than the Pixel? I’d say the opposite actually.
- I made the mistake of spending 1000€+ on a phone first and last time in my life tbh, never again, not worth it
- I’m also extremely careful with my devices and never really drop them or whatever, but my experience of sturdiness/survivability is far greater with Android devices. I choose function over looks.
So, if you’re the kind of user that will use the official apps like Contacts, Email, Safari, iMessage etc, you’ll be delighted by the yearly incremental improvements and can cruise happily in a safe and up to date ecosystem.
I personally regret spending so much time and money and the iPhone and Apple Watch. I still do stand by the fact that:
- Macbooks are quite nice (if you don’t even need to repair them, that is)
- the Apple Mini/Studio are beasts too

- the Airpods Pro are still my go-to recommendations for on the go buds
- the AppleTV 4k has some quirks but is overall a very nice TV box if you don’t want to hack your own OTT Rockchip SoC

- the iPad is quite decent for what it does yet with a poor battery too
Meanwhile, all the other products not in the list above are an awful value and/or product as a whole, unfortunately. They’re trying but fall short in unexpected ways and with no ways to get around them unfortunately.
Again, it’s my personal experience. 
Feel free to make the switch if you feel like it might ease your daily mental burden of trying to figure out a nice way to achieve your daily tasks.
For me, it was slowing me down more than anything because I wanted more/less and not the Apple certified way of doing things.
I also value privacy more than ease of use nowadays, and are fine doing a concession there. It is also more sta(b)le, in a good way.
EDIT: as mentioned above, I also don’t want/need/wish any AI on my phone.
I’m fine writing my messages by using my fingers.
EDIT2: since you do live in the UK, I doubt moving to the iPhone is a good call given how the UK government is pushing on them for a backdoor… 