can’t properly explain the differences between an OS, a browser and a search engine
Which, of course, was the goal of manufacturers all along. First computer you used a lot was a Chromebook? Google is all of those things. Was it a Windows 8 or later system? They damn near are the same thanks to web search integration with the start menu that only nerds like me care about disabling.
I think people who haven't been been the target of insults since high school (or maybe ever?) forget how petty and uncreative it often is.
The point insulting someone isn't to be truthful, it's to be hurtful or put them down.