I'm not arguing against high clearance trailng arms, nor am I saying there isn't a benefit at all, just that, in my personal experience in the rocks, the benefit isn't enough to justify the price.
The funny thing is your second "illustration" is actually closer to the reality of stock trailing arms than the first.
If the trailing arms actually attached to the vehicle above the bottom of the skidplate and came out at a giant angle like your "stock" illustration, then yea, high clearance trailing arms would be more of a benefit.
But in reality, the trailing arms attach to the vehicle below the bottom of the skid plate, and are close to level, not at a giant angle like in your first illustration.
Take a look at the bottom of any standard trailing arm on a vehicle that gets used in the rocks. You will see that the majority of the damage to the arm or skid is in the red area, with significantly less damage in the blue area. I'm just talking about real world experience, not unrealistic pictures with square rocks.... 🤷
Sure, if you are replacing your arms with aftermarket you might as well go high clearance, but if you are in the fence about spending $500 replacing perfectly good stock arms with high clearance arms or just adding skids to the stock arms, the high clearance arms aren't as big a benefit as people would have you believe. That's all.