InterSynth

To me he always seemed off and disingenuous.

Yes! I use Inoreader on desktop and mobile!

I’ve degoogled my life as much as I can, but it’s almost impossible to completely ditch Google Maps, YouTube, and Android. So I’m not even sure I’ve done anything significant, because I assume they get pretty much everything from my phone.

Closest thing I know is Fedilab, which works with Mastodon, Pleroma, Pixelfed and Friendica. While compatible with each other, each fediverse service uses different parts and features of ActivityPub (the protocol they all share). It’s technically possible to build an app that does it all, but doesn’t really sound sensible.

Brave because it has great defaults out of the box, and it’s Chromium, so all websites work as intended.
I wish I could recommend Firefox or LibreWolf, but their performance isn’t nearly as good.