So, if the enemy team is so “incompetent” then why do you have to exploit map issues in the first place? If they’re not very good, why do you need to use such an under-handed tactic at all?
The problem is that against two evenly matched teams, frequently a match will come down to a tie, 100 to 100 or 50 to 50, or a very close score.
The issue is it only takes a few seconds for that flank to adjust those numbers enough to “win” the game for a team that otherwise is unable to win… and it wouldn’t happen if the announcement was reliable and prominent enough to warn you that the ONLY OBJECTIVE THAT MATTERS is under attack or if the sentry defended itself correctly against that spot. If these aspects were not present, it certainly would never work.
I have no problem with a team pushing into the front and doing it while taking or managing the damage in some way, I have no problem with them hopping on the ledge if they’re under attack and I get a notification… but right now, hopping on that ledge, and sitting beside the wall where you can’t get shot is completely scummy and just as cheap as Marquis, so don’t kid yourself that just because you do it and sometimes it doesn’t work out makes it okay.
I’ve never lost a sentry to someone back-dooring… I have lost a few games to it though, where teams that stood no chance of actually beating us, managed to sneak someone up there for just long enough to do a point or two of damage and then they manage to defend theirs (usually with heavy Kleese shield regen usage) They were all close matches.
An OM camo’s steps into sentry range, drops napalm and his ult and manages to hit a few points of damage on it: Not cheap.
Two members of a team dive through your line, one tanks and they both ult managing to put just enough damage on it that they get the advantage: Not cheap.
One player hops up on a ledge, shoots a sentry while the sentry can’t fire at them at all, and can certainly kill the sentry BY THEMSELVES without anything else if you don’t instantly go deal with them: Cheap underhanded garbage.
In both of the first two examples the team takes a gamble, and a risk, and they also have no chance of doing full 100-0 damage on the sentry before dying.
In the 3rd the only risk is that they get collapsed on by a team that notices them. There’s a big difference.