Just follow ppl who enrich your timeline and don't spam.
In this closer network you still get messages from outside through boosted posts and answers.
At the moment a follow on nostr is not "I like you". It's "I want more of that".
This way I unfollowed a lot of ppl I like but just wasted my time with their posts.
For the meme spammers I made a special "spammers" account and check it once a month...
Maybe a "hide user", or "hidden users" filter/switch would be useful here? nostr:nprofile1qqsyvrp9u6p0mfur9dfdru3d853tx9mdjuhkphxuxgfwmryja7zsvhqpzamhxue69uhhv6t5daezumn0wd68yvfwvdhk6tcpz9mhxue69uhkummnw3ezuamfdejj7qgwwaehxw309ahx7uewd3hkctcscpyug