I don't care about the other stuff, but I had water beds for almost 40 years and loved them.
Nothing like getting into a bed with a 98.6 degree temp for restful sleeping {or anything more active}.
People that make fun of a well constructed water bed {with individual sections} have never had one.
I could no longer get replacement parts for my water bed by 2018 and have been sleeping on a very good mattress since.
Given my choice, I'd go back to a water bed, but there is no choice.
My bad, there is a choice and I will investigate it.
Like playing hand ball against the curtains.
No recoil.