I think there are multiple things going on here. Number one is that there was that slightly odd letter sent by one group of GP's asking care homes to reassess DNR decisions for some of their patients.
Number two is that when the pandemic was at its height, it may be that some staff did not consult relatives when they should have for whatever reason.
It is (and has always been the case) that DNR decisions are made by a doctor. Where the patient or their representative does want a DNAR decision recorded, its not usually an issue, its where the doctor thinks it should be recorded and the patient, but more usually relative, does not that the fun and games starts. God knows I hold no brief for doctors, I have dealt with enough of them that I wouldn't trust with somebody else's rubber duck, but I think in this case there is likely to be an element of the rage of grief here "The doctor shouldn't have let my mum/dad/relative die."
So basically more detail needed before we judge