You know what, PC gamers have gotten away with being above the fray for ages. It's because they mostly kept to themselves, rarely involving themselves in the console war.
Microsoft co-opted PC gaming because they want to own that too and they fucking HATE Sony, make no mistake. Many of the top human beings at Microsoft hate the human beings at Sony and their fans. They want to make sure that Xbox leavers head to PC. The bad feelings between MS and Sony and the market leadership of Sony have made PC and Xbox have an allied cause.
After this began to happen, many PC gamers began to get vocal with some of their long held beliefs and suppositions. Many of these beliefs are antiquated and incorrect. Most of them are meant to agitate. Agitprop against Sony. In doing so they got the attention of the average online Sony fan.
Now they are finding out what it means to pick a side in the console war. Every shitty thing their preferred platform has going for it, Sony fans are going to highlight. It really feels super shitty when others are shitting on your favorite thing all the time. It's almost like PC fans don't like a taste of their own medicine.