I wonder if some of them are bugged and not others. That's pretty much all I've done is fight PvP since I got one about a week ago, and while I've lost my canopy a couple times, it didn't seem like it was out of the ordinary. And that includes a lot of fights where I was on the losing end just getting whaled on with hull in the teens and single digits.
How many of your combatants in San Tu are having trouble with the canopy? My useless and meager PvE experience has no bearing on this conversation, so we should probably talk to other users.