Just to be clear I'm not arguing with you one bit.
The 43X/48 won't run on 147s unless the springs are fresh according to reports here.
Some run 115s for insurance however only the barns projectile is decent at that weight and they are very expensive.
Glocks have had broken extractors.
I had 5K through my first shield.... No problems.
All small guns are a compromise.
Sig is a marketing firm. S&w at least tries to make guns.