Basically, I have this really annoying little fucker in my life who everytime he spots me interacting with people, says this. I’ve interacted with him very few times, so he basically doesn’t even know me.
While I am a little introverted, no one likes this bs.
I’d either go with “Ok, cool 👍” or just ignore them.
The best way to deal with morons like that is to not pay a lot of attention to their comments.