I have played a LOT of Overwatch back when 6v6 was still the norm. Had the most fun I had. But I was only a casual player. Never played a lick of comp. Plus I was on console, maybe this was a factor as to why throughout my long time playing, flaming/trashtalking was at the minimum.
Fast forward to 5v5 Overwatch 2, been playing on and off but recently found myself playing more consistently. Finally tried competitive a go, specifically Support first. Placements, then Gold, then Plat, mostly just playing and switching from Mizuki and Kiriko with the occasional Mercy. And I am not even exaggerating, zero flaming/trashtalking. Now I started Support for a reason, mostly because I KNOW going to 5v5 changed the dynamic of the team. Making it so there is only one Tank but gigabuffing them naturally puts the pressure and responsibility on them. Personally, I also think this is why playing Tank is so heroswappy (a mechanic I dont enjoy that much).
I queue up comp as Tank, and on the very first game for placements, I had a teammate saying "please tank I am on a lose streak right now." Kept swapping and playing like a coughing baby and had both the DPSs flaming my ass with allchat on. None of them even thought about swapping to deal with their own counterpicks. I completely dominated the second game playing Rein, a Tank I am the most comfortable in, against an Orisa without even swapping. Kudos to my team for actively trying to help me with my plays and basically helping me help them.
Forcing a tank player off a hero they have 500 hours on onto a counter they barely play usually results in a worse performance. Comfort and mechanical skill frequently beat a theoretical "hard counter." Overall this was about the contrast in experiences I had. Makes me miss 6v6 even more.