I'm not in the "don't let the door..." camp here, I do think its kind of rude. I'm also not in the camp where we should be fretting that a player or even a squad changes to another game or bashing HTCs work. Lets be honest about some mistatements here:
AH is only about planes---not only, just mainly.
AH2 is DX6 code---BZZZT, try running it with DX6 and let me know what happens.
WW2 has better graphics---for crawling through the grass or hiding in the tree line sure, thats what it was desinged for but it comes at a cost. There's the 64 limit and the distance limit, of course you'd have to be airborne to really be freaked out by that.
The GV war in AH is buggy---well that one is true. I've completely given up even trying GVs, it is irritating and I'm no good at it at all. I'm doing maybe one or two GV sorties per tour and it is either base defense in an Ostie or a supply/troop run in an M3. Also the groundwar model in AH is better than the airwar model in WW2, so neener neener

I suggest we all tone down the rhetoric some. If the LTARs wanna leave and play WW2 then I wish them good luck, i think they'll be happier there since thats the kind of game they play. I also think I'l miss dropping thousand pounders on em...at least a little bit.