If you have the time + know how to keep up with Arch, and want the latest packages or need the latest drivers, then go for it.
If you only want an Arch install experience, then fire up a virtual machine and stick with Endeavor or switch to a stable release like Debian on bare metal.
But most importantly, if it brings you value (in productivity or experience) then whatever you decide isn’t a stupid decision.
Tbh, there are a handful of reasons to avoid F-Droid, all of which existed long before this. AFAIK nothing with the app itself changed as of yet so I’d hold off on quitting it over this.