I see. I am sure there will be greater support for blocking instances in the future in more apps.
My developer spidey-senses (I am a web developer) tell me that the name of the instance may still be an issue becausesomepeopleliketopurchaselengthlydomainnames.com. If that’s the case, maybe a comprimise could be to show the instance icon (assuming that’s a thing) next to the community with an option to click to get the full instance name? just spit ballin’
In that case, adding a “block instance” button would resolve that specific issue. I use Connect, and I just click “block instance” if I see something from an instance I don’t like. No need for me to even see the name of the instance, connect knows it so it just uses that when blocking.