that is true, but there should be elements to help you take certain things in control. If there is a measure which prevents people from leaving, It is more likely that their team mate can sort of bring things around.
this is a problem of the game, not the surrender vote. The game has set settlement capture and total elimination as it’s criteria for winning. Both of them are very tedious and require lots of actions. This sort of stuff also happen in 1v1s.
Yes no one can know for sure but if doing something is as easy as just pressing a button lots of people will do it. AoM ranked matches feel like CS2 casual matches, every one just comes and goes.