CapnZapp
Legend
No.One would hope you apply the same logic to players then...
Otherwise this looks a lot like "I'm giving the monsters a mechanical advantage because I can't be bothered seeing if it's legal. But I'm willing to go to the effort to rule that the perfectly legal combination the players would use to do the same thing is illegal".
You may read it that way, but that's not my problem. And it doesn't make my argument less viable.
If I don't care to check exactly how two enemies get flanking, it is because "obviously they should get flanking, they're two to one". By not checking the rules I'm only avoiding finding some corner case that makes them not get flanking. Which is great, because that corner case probably wouldn't add any value to the gameplay anyway.
If I do this, then I obviously apply the same standards to the players. You're two against one, sure you get flanking. Easy.
But to return to the point, I'm not willing to bring the game to a halt just to have a rules lawyer explain that the rules do actually allow him four attacks with bonus damage. When a normal reading (not merely a casual reading, but not studying-for-an-exam reading either) would not find this to be the case. This effect is hidden. It's complex. And there's a normal way of doing it, that happens to be less effective.
But remember the real issue here.
I'm not trying to force you to run your game my way. What we're discussing is whether a player is justified to try to force this ruling into a game or leave the group. As for myself, I'm arguing that that would be a monstrous over-reaction (and enough of our fellow posters have overreacted as it is...).
This rule (or effect of the rules) simply isn't central. It doesn't add crucial value to the game.
In fact, I'm saying it's inelegant and non-intuitive and that the game would be better without it. That's not saying your game is either of those things just because you happen to like it.