@Astro-What we shifted the responsibility to the plugin developers to clear compatibility with newer versions of NodeBB, which unfortunately means there are fewer plugins shown since many plugins are mainly stable and don't need updates.
Bit of a catch-22, but the other alternative is that we don't do that, we get lots of plugins that show up in the plugin list, and 99% of them are incompatible and completely bork your NodeBB.
That's a worse alternative.
Anyway, if you know which plugins are actually working, please just open up a new topic on this site about it! We can then just make a PR to the plugin and tell the author that someone tested it against v4 (or whatever)