You are not wrong in your deductions and analogies. However - and I have already posted this to you - have you considered the possibility that Wright also could not react in time to stop the crash (which would be Roglič's fault)? That he did all he could (considering his circumstances) to avoid the crash?
In my opinion it's really not about the blame. Blame is something for the instant media. It's about on how to proceed and improve in the future. Here i feel Roglič has a point. He can train as hard as he can. He can improve his riding skills as much as he can. But if the other rider(s) in the peloton doesn't have your back. When you do something stupid. Then it's all to no avail. Here hence something needs to shift. A lengthy and hard thing to do.
Don't be reckless rather relegate.
That is a start. But obviously not even that will become the standard over night.