No non-scammers on ignore. I did once have someone on ignore, but took them off because it was turning some threads into Swiss cheese where I was missing half of a back and forth. I ended up deciding that it was better just to partially ignore by not feeding the trolls. If someone consistently responds to me and I don’t answer then that’s a conscious decision and not a function of not seeing it. I more or less just don’t respect their opinion or see value in an exchange.
As I’ve gotten a bit older I get bothered less. Honestly, if someone is clever when they come after my team or me, I get a good chuckle out of it. I enjoy the lulz.