shingles should overlap the ridges twice
Before cap installed.
NOT cut back!!!
Hips should be lapped once.
That way if cap fails or blows off ,
the roof stays water-tight.
Unlike your picture with no underlayment at all,
I put two plys of asphalt saturated underlayment the first inches of any hip or ridge.
Note, with no underlayment at all at ridges
Hot rising air in the attic would easily burn and blister any cap shingle!
You present pics as evidence of failing three tab shingles as defective for installing over hips and ridges.
Truth is you have no idea what you are talking about.