I think this is a misunderstanding.
If you are comfortable just accepting Librewolf’s defaults without question and without “understanding each config” there is no reason the same wouldn’t be true for you with Arkenfox’s defaults.
You don’t have to change anything if you don’t see the need to, the same is equally true of Librewolf. There is nothing stopping you from just using the Arkenfox template as is, and never going any further than that (beyond the occasional update)
If it’s not clear, regardless of whether you use Arkenfox, Librewolf, Vanilla Firefox, the settings are all the same, the defaults differ but these are all just the same built-in Firefox settings (same ones you find in about:config and in the GUI). Arkenfox isn’t adding any complexity, it’s just showing you the complexity that is already present.
Arkenfox strongly recommends you read the wiki (because knowledge is empowering, and because it’s a DIY oriented project), but there is no technical reason you need to understand every setting Arkenfox contains any more than you need to understand every Librewolf setting or Firefox setting.
As for the GUI, it is a super useful tool for DIYers, but it is not not necessary to get started with Arkenfox. Many people who have used Arkenfox have probably never even looked at it, many don’t even know it exists. Its just a reference tool (and it’s useful for all Firefox based browsers, Librewolf included, not just Arkenfox–because all of the settings you see there are Firefox settings).