I'm not defending their insults, but I take issue with you responding to them in an inflammatory way. It's not okay to stir someone into a temper, and then when they react badly, weaponize that against them.
Someone behaving badly in conversation is not license to treat them badly. An eye for an eye makes the whole world blind.
My suggestion to you would be to flag insulting comments and move on rather than trying to be hurtful to someone who was hurtful to you. As a personal rule I try to respond respectfully or not at all. I don't always succeed at this. When I don't succeed I find I make an fool of myself and end up saying something dumb.
Honestly I think that's pretty much what happened here - your first comment in this thread has insulting undertones, the other commenter took the bait, and they came out not looking so good. You took advantage of their overreaction to further insult them, and in my eyes you look like a jerk and a bully. But I bet you don't treat people that way in general, and that it isn't compatible with how you see yourself and the reputation you'd like to cultivate.