you are completely wrong lol
most people in low elo’s had what is now bronze level aim. but once you would hit around 2900+ if you wernt in cover 24/7 you were getting headshot by mccree’s, soldiers, zens, hogs, widows and hanzo’s (ect ect). and this is to say nothing about the tracers, sombra’s, zarya’s or anything else.
the dps output for most of the dmg heroes has been the same for 6 years. mccree has been 140dps for 6 years. soldier has gone between 170dps to 200dps
saying people “needed to focus fire” is a lie because for much of seasons 1 to 5, a soldier 76 could solo kill any tank with headshots, and tracer could borderline 1 clip a zarya. (whose dmg btw is the same today as it was then) the reason they had to focus fire was because they were trash but anyone with good mechanic’s could solo carry to GM entirely on aim alone.
something that is far more difficult to do now because of the massive heal creep. there is no dmg creep, there is only the heal creep. the average player just improved there aim a great deal over 6 years.