i was starting to count the time from where started using it to right now, which is not that significant + counting 4.5 months as half an year is also quite wrong.
But seriously m8, you are giving too much credit for people that can't even realise some things until Valve shows them how to.
UMP was also overpowered from like 2014, no one even cared about it until some pros suddenly started using it. Same with Tec9, Mag7, P250. This isn't about how good or bad some guns are, this is about how stupid are CS:GO pros, when they realise it only when Valve changes something.
LIKE WTF, these guys could've won lots of tournaments, even against fucking Astralis, if they just used their time not for doing same thing over and over. To be honest i haven't seen anyone except for BIG, Liquid and Astralis really invent something into this game in this era, teams just do same tactics, same strategies, same guns.
And you can't understand 1 thing, THEY ARE BEING FUCKING PAID FOR PLAYING GAMES, why would they not even try to play BETTER, if there is a GUN, SO OVERPOWERED??