In nostr, you (your client, to be accurate) decide what you see. Any filtering you can imagine can be applied. Obviously, if you don't know how to code it yourself, you'll need someone to do it for you. But you always have the option of being in control.

I can see a future where some clients, like Damus and Amethyst, come with pretty good defaults + some simple but helpful config options for this. This enables people to have a good experience without having to put much thought into it.

On the other side of the spectrum, you will have highly customizable but highly complex clients that will look more like a query engine than a user app. Those will enable any kind of weird filtering you could picture, but will take skill to use. Most won't need them and won't touch them.

Just my 2 sats.