Oh really? I have a friend whose massively into Esports - super nerd and he has some great multi picks. You're probably right to be honest, if you arent massively into the sport and understand how teams perform, single sports bets are most likely better in the long run.
Don't get me wrong, you can still win some nice money when you win multiples and maybe betting esports is different; but I still think in the long end it is better to only bet on singles. How much multiples have you not placed, where always 1 pick (and a lot the pick would the lowest odd) fails.
Its always something open for discussion and I do agree with a lot you're saying, I think the average person would have quite a few multis that would 1 have lose, however for someone whose been following Esports and individuals players for 5+ years, you cant discount their knowledge in picking some good winning multis. Eitherway, it's super exciting to see a good multi and I think we can both agree there.