Is this a bad privacy practice?

one thing I’ve read is that, using Tor Browser to use your bank account is a bad privacy idea since Tor’s purpose is anonymity and by logging in on your bank account you’re just breaking the anonymity purpose of it, so consider the following:

if one registers on ProtonMail ENTIRELY through Tor and has a full e-mail that they only use on Tor and nowhere else (meaning NEVER logging on it on clearnet) + SimpleLogin (also through Tor) would it be a bad idea to use this email with internet accounts on social media that have your real IP? (this is all the social media has, your IP since you’re browsing it on the clearnet, nothing else nothing more, the email is still from Tor and never touches it)

I also wonder if the same thing would be a bad idea for stuff like banks (you’re not accessing your bank account through Tor, your email on the bank was made on Tor but, I think it would be kinda pointless since the bank already has all your personal information)

The email to the bank may not necesarily come from the Tor network itself, it would come from the service provider’s IP.

The only way for the bank to know it is you is if the mail provider will directly provide your info to the bank which isnt likely unless some government authority is involved like the police or a court order.

I’m not sure that there is a clear reason that it would be a bad idea to do this, but it seems like a lot of unnecessary hoops to jump through for no clearly defined benefit. (you may have a clear, idea in your mind, I’m just not understanding what it is from the limited info in your post)

What is your hope or the goal you are trying to solve by using Tor in the contexts you are describing (with personal non-anonymous accounts?

Agreed. If you look at cost/benefit ratio I think the hassle of constant CAPTCHAs and slow speeds is enough to deter the average person from using it 24/7 like a VPN. I think Tor has its merits, mostly anonymous web browsing. But logging in to banks and social media is just nonsensical.