Yes, these additional settings are turned on by default. If you find they interfere with your browser experience you can turn them off to bring things back to near-stock firefox.

It’s not the same thing as recommending switching to Linux from windows because LibreWolf is an extension of the existing Firefox code. I think it’s more akin to downloading an extension or upgrading to windows plus, you don’t lose or have to adapt to anything in the changeover.

I now use Librewolf, a free to use fork of firefox and don’t have these popups. It’s otherwise exactly the same as the stock firefox experience (including extensions), but the Mozilla premium services are now opt in.