If the vilna gaon believes something is part of Torah, and a blog is against it, then they are by definition anti torah. Not “supposedly.”
The only people who wear fabric on their head that deny kabalah are maskilim. Not one group of Jews who traces back to gedolei achronim has any issue with kabalah as a whole.
Some, like yekkies, do not incorporate it into their yiddishkeit very much, because of their experience with false messiahs. But they used to, very, very much (the kav hayashar was rov in Frankfort)
It’s not detective work. People are drawn to minus, as chazal say “minus shaani, demashchi” minus is different, because it draws people. It’s an old yatzer hora, but it exploded in recent centuries and had a resurgence on the Internet, which gives every sonei Torah a platform to think they’re “dismantling” Torah concepts.
Dvar Hashem is not “dismantled.” It appeals to people who wish to justify things they do. Especially because they know that certain aveiros are considered the most chamur (in shulchan aruch, who also accepted kabalah!) because of statements in the zohar and kisvei arizal. Some people are tortured by guilt, and it becomes a lot easier if they just wisk away that part of the Torah.
For others, it’s just plain gaavah. They think they literally are on the same level as rishonim and achronim who universally accepted kabalah as Torah misinai. Yes, some questioned exactly how much of the zohar was written by rebbe shimon bar yochai, or his talmidim, or talmidei talmidim, but no one whose name you’ll find in the mishnah berurah questioned its truth.
Of course, there’s kapach. Who was extremely influenced by his years at university; imagine being an innocent yemenite Jew who barely knows anything outside of the community, and suddenly you’re exposed to “new” ways of thinking…he succumbed to it. And he was toleh himself on what he thinks is the rambam; of course, achronim way before him preempt his machinations. The migdal oz, for one, and the abarbanel, who writes that the rambam in fact saw the zohar, and had charatah for being involved in philosophy, saying that had he had the zohar he never would have needed it.
Either way, it’s chazir treif. And the most treif part of it is how nonchalantly you throw around your apikorsus, in an attempt to normalize kefirah in a public space. It’s dangerous.
וכל המינים כרגע יאבדו, we don’t even daven that such people do teshuva. We daven for the above, three times, each and every day.