That’s such an obnoxious tactic. It’s basically saying “Your point is invalid unless you can cut this Gordian Knot on the spur of the moment in an internet comment!”

It's less bad than the ill informed Dunning-Kruger opinion it rebuts.

Don’t worry Phillip, ignoring the bit where it isn’t a rebuttal at all, I know I’m not a smart person. That’s why I like simple builds!

It’s a logical fallacy; it doesn’t rebut anything.