Let me explain
The thing with chamber imo , is that he looks op cause when a chamber pops , he seems op due to the emphasis chamber puts on gunplay, but it is exactly that emphasis that makes him overrated imo , cause u loose so much if u pick chamber compared to other sentinels , stuff like better flank watching and info gathering , more team wide and team helpful utility, and less aim intensive mechanics. The stats also show that , I Can't remember how many times I have ruined entire teams by having a chamber trap blocked off and getting a insane backstab(this is a lot harder with KJ and cypher)
While ppl see chambers win games with pop of rounds ( I will admit tho chamber gives more opportunities for pop offs with his tp and guns), ppl don't see when chamber looses a round , whiffed shot are a lot more punishing on chamber cause that's ur job and when ur job is based on inconsistent human mechanical skill(yes even for pros like yay, ardiss and derke)u lose the most important perk of the sentinel class , a high impact floor. u can provide impact as kj with a turret watching flank , a cypher getting info from an aggressive cam ,a sage using utility to slow a push and correct mistakes with rez and heal . chamber on the other hand is the embodiment of high risk high (but inconsistent) reward , this is why a lot of ppl consider him a duelist in all but name , but he can't be a proper duelist, he needs set up, he's a lot less effective on attack and his trips are the easiest to dodge.
Tl;DR
Chamber is overrated cause when u see a chamber pop of , u don't see all the other times he wiffed, the trip got smoked , or when he just doesn't help the team much on attack, yes the TP is a little busted with the cooldown but beyond that (other couple of ult and slow changes ) chamber does not need a nerf
Pls don't lynch me