Again, you've changed the narrative from whether it's legal to whether it's effective.
But because you're waffling on the first, I'll address your second. Evidently you've never played short side soccer that doesn't have offsides. Even in that sort of league, where everybody knows a poacher is possible, offensive players are routinely forgotten about by the defense. To even propose that the scenario is ineffective or unrealistic is just naive ignorance because you're taking a false position that hasn't been tested. I'm saying it's possible per the your interpretation of the rules you said put the responsibility on the defense.
No, I didn't change it. I said all along that it wasn't offside, either what happened or your hypo. After your hypo that I supposed was intended as a counter-factual that proved that it must be against the rules or teams would or should attack that way, I addressed that by pointing out that it would not be advantageous to implement such a strategy.
In nicer words, I was saying that the reason teams don't attack that way is that it would be stupid and ineffective, not that it is against the laws of the game.
Thanks to mgarbowski, I consider this matter closed. I guess you could say you got the forum-equivalent of "poster-ized" (blue-mooned, maybe?). Just like old times.