We question it, because it's not always the case that it works the way it should.
Take for example the Specialized Demo DH bike. A few years ago, they designed it, tested it with their pro riders & went into production, only to find a huge number of frame failures from the general public. Turns out we don't ride the same way a pro does & brake jack was causing the frames to crack - which they hadn't seen at the time.
They build bikes for the average rider. Therefore if you sit outside that 'world' it is likely a compromise. That can be weight (high or low) riding style, and speed. If you are a faster rider, generally the shocks are under sprung both for compression & rebound & some frame designs can be way too linear in the way they use their travel. Those points need addressing to make the bike work properly. The current Stumpy Evo for example is not very progressive, so it eats through its travel too easily if you are quick & push hard into corners & can't really be used with a coil shock. The Cascade Link goes a way to mitigating that, increasing progressivity.
I don't know where you are based, but with Specialized's clevis link suspension on some bike most tuners will only recommend coils (with a steel shaft) because of the side loads the design puts on the shock. The current '21 Float X2 is renowned for being a great performing shock, but not reliable, it suffers from side wear of the inner air can on normal bikes, let alone on something that has a history for eating most things fitted.
Just because they do things for a living & have relevant degrees, it doesn't mean they are always getting it right, or doing things for our best interests. See PF BB's, BB30's etc. Now we are back to Specialized using a traditional external BB as a 'selling point'.
I would be interested to see what Cascade could do with the stock bike. They do have a habit of increasing travel with their designs though & on a relatively small shock for the travel, it could mean issues with regards to air pressures or spring weights.
