As a PC gamer I always found that Sony fanboys were the worst. First off there is just more of them the PS2 is the best selling console of all time that made a lot of sony fanboys the PS4 sold so well and was uncontested so the Sony fanboys had success they could be proud of for some reason.
Microsoft fanboys maybe were worst during the 360 era but that was a long time ago and now they don't exist
Nintendo has some retarded fanboys but generally speaking their consoles don't sell as well and a lot of the buyers of Nintendo consoles are parents for their kids or just older boomers who don't really get attached to them or argue the console online.