Interesting toilet model and thanks for pointing out its advantages. So maybe we should move to lower sitting toilets lower than the current standard, which then allow for hovering (in public toilets)? What is the current standard toilet height? I did a quick google search and a page came up that said:

Today's so-called "comfort height" or "right height" toilets feature bowls that are 17 to 19 inches (43 to 48 cm) high, as compared to the standard 15 inches (38 cm) of a regular toilet. The higher bowl height can be good for the knees and back and can offer real advantages to taller folks, the elderly and people with mobility problems.

www.thespruce.com/dont-buy-the-wrong-toilet-327008

So it's saying that a higher toilet is better for the elderly. Hmmmm....

I used to be a big fan of squatting toilets but now after the accident and resulting disability I think that sitting bowl is a great civilization improvement

I come from Zimbabwe and most rural areas depend on Ventilated Improved Pit latrines which are basically squat toilets. Also old locations and public toilets in urban areas have squat flush toilets. Personaly i advocate for toilet seats for household toilets however for public toilets i advocate for squat flush toilets because they are easy to clean and use. I have seen that people will still squat on the chamber because it will be dirty and cant sit on it on most public toilets