The person Im responding to was gatekeeping. I responded by sarcastically doing the same to an extreme degree. A lot of people Will have agreed with the person i'm responding to. "Oh yeah of course You should understand these things, the things that I already understand", genuinely not realizing that there's no basis for that. When they reae my response they realize what they were doing, and are less feeling embarrassed for their senseless (and pretentious!) gatekeeping.