Leave people the fuck alone.

I do because I'm shy. But I think it's insane to go around wanting to police talking to strangers when in public. That's part of what it means to be in public. Someone might talk to you. The horror.

You’re not entitled to anyone’s attention and you don’t have a shot unless they offer you one.

Shooting your shot is how you offer someone their shot. Interactions - which, even with strangers, are a normal part of the human experience - don't happen unless someone goes first. If the other person ignores you, says they're not interested, or indicates a lack of interest with a non-committal response, that's when politeness dictates you shut up.

I never said anything about anyone deserving to die in a fire.

No, but you joined the discussion on the same side as someone who did, and never distanced yourself from that statement until now.