Can't say that I've seen any blame directed at Rika's coaches, in part, I think, because she only recently relocated to The Cricket Club and, from what I've read about her injury, it predated the move to Toronto.
As far as Bradie is concerned, yes, there has been plenty of comments about Tom Z and his history in this regard (folks in the US women's thread especially like to bring up how he let Rachael Flatt conceal her injury and compete at Worlds in 2010). I don't know if I think it's been to the same degree as the Eteri criticism right now but when you have as MANY high-level skaters as she does, there are bound to be more instances of major injury that receive attention.
Eteri has, what, 6 of the 9 Russian women who received GP assignments and, so far, 3 of those 6 have been/currently are injured in the past 3 months, plus you have Med's injury back in 2017-18 that derailed her entire fall season and allowed momentum to swing Zagitova's way. It's hard not to notice a pattern and question the coaching choices when 4 out of 8 of her skaters from the current and last Olympic cycles all were severely injured during the Olympic season. It's hard not to wonder which of the other three will injure herself in the next 3 months and possibly lose out on a chance for Olympic glory.