The first of the two was calling the flagger a “little self-styled midget of a prank troller”. From our conversation just now, my understanding is you meant your “more fucking memes” in good humour to people who would receive it well, but also that we can both see it might get interpreted poorly, right? So let's assume there was at least one person in the room who had that poor interpretation.
They now see you insulting (in a pretty silly way, but nevertheless an insult) a flagger, which resembles more or less the playground bully who starts bullying the kid who actually reported their bull…