I don't hate anybody, I didn't need some crank who talks about omniscience to help me realize that.
From a cosmological standpoint, of course one can argue that nobody has a free will and that nobody is ultimately responsible for anything.
For practical purposes, this is a pretty useless insight. In practical terms, the people that cut you off in traffic for no good reason are what we humans call "assholes" (or similar). We sanction this behavior so that we can work better as a society. There's a purpose for you to get upset about such behavior. It is directly connected to your instinct for survival, your will to live.
Yes, sometimes your will to live makes you suffer. That doesn't mean killing off that will is "enlightened", or that the people who "tune out" are to be revered for it. You're rebranding a thinly veiled "sour grapes attitude" into a virtue.
> You treat people completely differently, you become kinder, more courteous, less hateful, and more patient, at larger scale animosity and hostility between peoples decreases to zero and world / universal peace is achieved.
This is a foolish belief. If there is no such thing as an "asshole", there is no such thing as "murderer". Remember, nobody is responsible for anything. It's all just part of the cosmic ballet! That's how Zen Buddhism helped the Japanese commit all those atrocities:
https://en.wikipedia.org/wiki/Zen_at_War
Remember, not everyone actually buys into this philosophy, by their nature. Your brand of philosophy is one of weakness, of little resistance. It doesn't have the "tools" for survival on its own and it's easily exploited.