I have always encouraged everyone to respectfully resign a lost game when they feel the game is over.
I do not prescribe to anyone which positions exactly will have to be resigned, because this can depend largely on the circumstances, such as playing strength.
And I respect chess.com policy that tends to use adjudications very rarely, because often there is no really pressing need for them.
It is a common misunderstanding with some that vacation use is the culprit. When an opponent of yours is on vacation, just relax, the game is not running away and noone is harmed.
I have nothing against a proposition to start using adjudications in tournaments to start a next round more quickly in some cases. As long as chess.com does not see the need to introduce adjudications there, just relax and do other things. You will be notified when the next round starts.
Dont turn on the vacation pause! You are a premium member so just go on vacation and the site will automatically switch your status to 'on vacation' when your first game is almost timed out. That way you dont waste vacation time.