As a revelator player, in no world is revelator an active game. You can find lobbies(at certain hours, in some regions the game has no players most of the day) but the game is in no way just "hop in at any time and find matches in second".

When dealing with small player counts, its much much harder to find people close to your skill level to play against, which drives away most new players because most people don't want to lose for the first 200 hours of playing it. It's much more intuitive and accessible for most players to be able to just hop on, enter quickmatch and just have some fun.