“not a single logical reason given as to why his suggestion is wrong.”
Putting aside the ethics of executions of prisoners, executions of prisoners without trial is a war crime. They hung Nazis for doing that sort of thing during Nuremburg.
Gvir is a Kahanist basketcase that lacks a moral compass. His ideology isn’t even really Judaism. He’s a chauvinistic psychopathic extreme nationalist that opposes democracy in lew of theocracy. He gets a thrill out of murder. He even threatened Rabin shortly before he was assassinated by Yigal Amir.
Hamas are extremists but this doesn’t mean there aren’t any on the Jewish side either. Gvir is unambiguously one of them. He has no clue he undermines Israel with his extreme rhetoric