Also, gedolim disagree all of the time. It’s extremely rare for one to disqualify another. It has never before happened, except for rav yaakov emden and rav yonasan eibishutz (which rav hutner said is the one and only incomprehensible part of jewish history) that one says the other is a rasha. Apikores, yes; this is what happened with misnagdim. But the only time i can think of where a gadol says another rabbi is a sinner, an evil doer, is rav elchonon. Because rabbi kook violated the torah by praising reshoim.
It’s an aveirah; was it because he was delusionally overcome with his “ahavas chinam” (a term he made up) and literally couldn’t tell that the zionists were evil and that he was praising their desecration of shabbos?
Perhaps, but is such a person mentally stable? Are they a gadol?
Or is it simply because he had a value system, based on European nationalism sprinkled with kabalah, that there’s something of value besides Torah, that you can be a good jew as long as you support the “nation” and the “land”?
If rabbi kook had not been into secular philosophy, i would be more inclined to be melamed zchus.