PWAs can be good, but for a lot of social media, they're only as good as their website experience. Many (most) companies seem to make their website intentionally slow and buggy, probably with the idea that users only need to use their web UI for a short while because they lost access to their apps or something.

For instance, I've installed Mastodon as a PWA and it performs great. Photoprism also works so well I haven't even bothered to look for an app.