We have no right to blame others, agree or disagree?

million dollar question! Agree.
I think its good to take responsibility for certainly anything "under your watch" too easy for management (at all levels) nowadays to point the finger to hide their own failings.
Theres a saying that a manager is only as strong as the weakest player.

"People are always blaming their circumstances for what they are.
I don't believe in circumstances.
The people who get on in this world are the people who get up and look for the circumstances they want, and, if they can't find them, make them." ~ George Bernard Shaw It’s easier to blame others for your shortcomings than it is to take responsibility for them.
It’s easier to blame than admit you’re not that good.
It’s easier to blame than it is to improve.
It’s easier to blame than face your own reality.
We all dealt with people who blame others all the time and who try to be right by making others wrong.
Such people are usually afraid to admit that they share a part of the responsibility and so feel more comfortable when someone else carries the blame for a bad thing that happened to them.
Sometimes the act of blaming others can be a cry of pain and a request for support.
whether one agrees or disagrees, this personality trait manifests itself according to the situation one is in

Yes I am agree