I don’t know what the state is on Android, but on iOS (and macOS) unblockable notifications aren’t really a thing (notifications need permissions that you manage on a per-app basis) and many app ads can also be blocked (1Blocker does it), though it’s not as powerful because it’s essentially domain blocking.
I’m not disagreeing with you, merely providing more context. Companies like Reddit and Facebook definitely push you more to the apps so they can extract more value out of you.
> Then that’s a shitty company and perhaps you should consider not using their service anymore.
That's not always possible. There might not be enough quality competition and I don't see others following my example to beat the shitty company into submission and make them change their ways if I do that.
> Either way I don’t see how that’s relevant to the point. It’s not like the web is any different in that regard.
Web is very different in that regard. You can pry any app open and change basically anything with a single press of F12. Most of the time, people already did that for you and submitted an ad blocking filter for everyone to use. This isn't even close to the crapware of a typical app store.