One thing about tags, readers don't remember your character's identity or mannerisms as much as you. If we stop reading and come back later, it will be harder to know who's speaking even if they have a unique voice without tags. I think said and asked should be encouraged for new writers...
You can say both. Search a thread that has the answer you need, and don't necro a thread from then as well. If that thread didn't answer your question, create a new thread.
What OP is talking about only works if there are no consequences. If there were punitive effects for stealing, less people would be stealing. The consequences for being cringe in public is just shame. A lot of people don't care about shame, which also happens to be the consequences for stealing...
Alice, this function does exist. It's called not interacting with the people. It's arguably easier to block people IRL than on SHF, especially if you are a homebody