I've considered a kneeling chair a few times, I feel they would be much better than a normal chair.
My parents tried this with their business when those chairs became fashionable around 20 years ago.
For some people, they lasted a week. For a small minority in the office, they stuck with them for years.
At the end of the day, you can use all the mobility aids that you want for daily life or whatever. But when you step under that bar, if you don't have to technique down, it's all irrelevant.
My youngest, who is coming up to three, will squat all day long without really batting an eyelid. My daughter, who is coming up to five, doesn't really squat any more (I got her to do an overhead squat with a ShakeWeight - that's another story - and her knees came straight in) and sits instead.
So right from the age of 4/5, humans (from my experience) stop squatting.
Does this mean you need to sit on a block of wood? No. Why not? Because all the block of wood is doing is forcing you into a good posture. Do you need a block of wood to do this? No.