Griefing? lol.
There are two basic types of "spawn camping". There is the "spawn battle" which happens thanks to most maps having spawns right on top of each other. So if I'm sitting on my spawn, and you're sitting on yours and we're 1.5k apart shooting at each other then we're both lame campers and it's no harm no foul.
Agreed on that- the maps are a wee bit too flat in places.
Then there is the "you attacked our base we pushed you all the way back to your spawn and you aren't smart enough to quit" spawn camp. Face it if you are getting vulched/camped then you have basically already lost the battle, in the real world you would be dead and we would be pillaging your homes and raping your sheep.
HAHAHAHA so you're only "camping" because you launched a successful counter-offensive, eh? So why don't you get a friendly to come drop troops and actually, you know, take the base? Yeah, right. People spawn or hangar camping while shouting NO U WE'RE WINNING DA WAR are obviously lying.
BUT- you raise a good point. The constant problem with Aces High is that the game is played, quite often, like a game (go figure,) and yet it provides a "war" simulation. In games there are rules, in war there are none beyond "win by any means possible." If six P-47s show up over an enemy airfield, drop eggs on the hangars, and hover over the field to own it, is that a dirty dirty spawncamp, or an aggressive CAP to lock down the field while they wait for a troop drop and/or ground assault? This is the same issue that comes up with cherry picking/interrupting 1v1s, head-ons, etc.
Though IMO it's fairly easy to tell if somebody's locking down a base in preparation for taking it with troops as opposed to farming pelts.