Today, we have an exciting update: Duncan and Paul, alongside many other talented members at Hopoo Games, will now be working on game development directly at @valvesoftware
This has improved further in recent years, so you probably weren’t seeing how it is now.
It may be different in other regions, but I see significantly less toxicity in Dota 2 compared to Counter-Strike, the only other big competitive game I have enough time in to compare it to. Though my CS experience was longer ago, and they could have improved things there, too.