Well, you see, if the scrimmage finder locks me in with a bot and on top of that with a bot with no players (it actually became a bot so I was unaware of the fact) is it not buggy?
Maybe your answer really is that they should remove the scrimmage finder. Honestly that thing is buggy also for other reasons but it is convenient.
Besides, your point does not hold: if you manually pick an opponent and he gets banned you face the same exact basic problem. Which would not be so much of a problem in itself, if it wasn't combined with the fact all the team's players were removed from the roster, for reasons that are obscure to me.