Wouldn't that be a relay thing and not a client thing? 

 It can be both 

 Sure, but I'd argue it should not be done go a general purpose client.  

I've pitched something like a sports client where you can lock into content rooms of teams you follow. 

 You can add only relays that block that content.  

 https://hotrightnow.nostr1.com/ blocks notes with Bitcoin or crypto. You're welcome.
nostr:nevent1qvzqqqqqqypzq9h35qgq6n8ll0xyyv8gurjzjrx9sjwp4hry6ejnlks8cqcmzp6tqqsxpn099dkzpp2lak44c5m3jkkhtz2e7uy97drsm8zxf6vfwhu7tysz40y5u 

 👀 

nostr:note1h7qux5445rw4ywkjtjj7yhc2utgqqt0x4ljm9f0ae7mxhp6rdwgswufj4w  

 Give an algo bump to anything around the WEF talking points while you're at it  

 Zero normies care about Nostr. 

Get your head out of your ass.