You seam to be comparing automotive to aircraft needs. So why can't you have high comp at sea level and have turbo boost at altitude.
I'm sure that the designers have taken everything into account. I'm not pro or anti. Don't really care. But I'm surprised at all the knockers but then again I'm not supposed about that ever.
When you consider the size of rods and cranks in a 150 hp aero engine to that of good quality automotive racing type rods of around the same stenghy that will take around 700 odd hp.
And like I've said earlier. It easier to make heat than it is to cool it. So is this engine air cooled or liquid ?
Maybe the aircraft is fitted with an emergency system for in flight starting.
Comes with a can of start you bastard tapes to the engine air filter inlet.