I was unaware until recently that there was a crackpot theory that not only was the old theory about sauropods...

I was unaware until recently that there was a crackpot theory that not only was the old theory about sauropods living in water to support their bulk correct, but that ALL dinosaurs were aquatic. They waded in shoulder deep water all the time. T-Rex, triceratops, stegosaurus, all of them, for millions of years wading around in bathwater warm swamps.

This idea comes from a British dude who seems to make his living appearing on science based TV shows and also wrote a paper on spontaneous human combustion.
https://www.researchgate.net/publication/230703694_Solving_the_mystery_of_spontaneous_human_combustion

Anyway, this recap of the "controversy" includes a humorous proof that giraffes are aquatic because there's no way they could actually live on land with those skinny legs.

https://chasmosaurs.com/2018/05/16/ford-versus-naish/