This wouldn't bother me so much if vehicles didn't live through TURRET destruction!
They don't.
p. 121:
"vehicles: Hits against vehicles follow the same general procedure
as hits against ’Mechs, though vehicles cannot survive
the destruction of a location and damage does not transfer."
The turret is a location. Also note the text for the critical hit version, p.195:
"turret Blown off : The Combat Vehicle’s turret gets blown
off , eff ectively destroying the vehicle."
Paul