I played League of Legends and didn’t have any problem with the monetization scheme because you could get a great selection of characters to play paying no money (could have played the starter Sona forever) or a modest amount of money.
What did bother me was (1) games taking too long (I don’t want to tell my family I can’t help with anything for 45 minutes) and (2) jerks. In ranked there were the people who thought they could not get ahead because the players they played with (me) sucked, in unranked there were too many people who couldn’t queue successfully (learned how to play all positions, even jungle, so I wouldn’t be part of the problem of having three people who want to play top)
Anecdotally (n.b. i have like 20x the time in dota vs league) I find the matchmaker in dota does a much better job of taking your behavior metrics into account. If you're nice you'll get nice people in your games. I think it's not uncommon for the 9 other people in the game to be willing to hold a pause for a few minutes if you need to deal with an emergency.
What did bother me was (1) games taking too long (I don’t want to tell my family I can’t help with anything for 45 minutes) and (2) jerks. In ranked there were the people who thought they could not get ahead because the players they played with (me) sucked, in unranked there were too many people who couldn’t queue successfully (learned how to play all positions, even jungle, so I wouldn’t be part of the problem of having three people who want to play top)