I agree, though as I said, it was a game of two extremes. I have some very enjoyable memories of that game.
Even the developers were remarkably toxic.
Funny enough, it wasn't so much the actual developers in the technical sense (those were fine people we far as I can tell, ElementUser for example always seemed quite nice), but Maliken himself was really bad. Haha
It's also funny that the person I replied to implied that league and HoN were on the same level of toxicity. League is a baby's game compared to HoN in that regard. What added to this was the fact that voice chat was not recorded, so any abuse over voice would never be punished.
Also you could upload your own picture for earlier in-game currency which yielded some... interesting results. The forums are gone now, but if I remember someone complained they reported someone with a nickname like "AdolfCritler" and Hitler's picture as their profile picture. The official answer was that this was on as long as he wasn't presented in a good way or something (which was hard, given the 12 character limit for user names).
Oh and for the longest time, S2 was fine with smurfing as long as they got paid in the process (so-called subaccounts). Multiple accounts per real user were not allowed under their ToS, but for the equivalent of $30, you got a second account that was linked to your main and shared all the cosmetics, but none of your friends, clan... or rating :) a ban against any account would affect all accounts though.
They were on sale once (which I used to buy one) and then never again because they knew and admitted it was mainly used for smurfing. Though if I remember correctly, this for rectified at one point, like a new sub would get your average MMR over all accounts as its starting rating, though I'm not sure whether in HoN or any other of their MOBAs (Strife and Reborn).
However, despite being an absolute circus, I always held S2 Games in high regard because all their games (until and including Strife) had Linux native clients from very early on. Savage, their first game, had a Linux native release on its launch day. In twothousand-fucking-three! And I tried HoN and Savage 2 close to release, they worked flawlessly.
Not playing that AI cashgrab slopfest Reborn though