Luboš Motl is one of my favorites, sort of. He is a Czech theoretical physicist. He was an assistant professor at Harvard University from 2004 to 2007. Since then, he hasn’t published anything. They say he did not actually fit into academia and had to leave.
But he still want’s to make an impression he is a practicing scientist. Maybe he is, i don’t know, but at least he does not hold academic positions anymore.
Luboš write a blog, “The Reference Frame”, which I frequent for fun. Not to say that the blog never contains anything above entertainment values, but since the blog is mostly about disagreeing with string theory opponents with abuse and insults, the real value of his writing is easily shadowed.
He loathes scientists like Lee Smolin, Peter Woit and Sabine Hossenfelder, calling them crackpots and worse . That is a weird position in science, where disagreeing and conversing is most important.
Try commenting Luboš’ blog and say something nasty about string theory. It is quite possible you will be banned immediately.
Luboš Motl may be intelligent and was once a competent scholar. But is also, among other ultraconservative fog that I leave aside, blinded by climate change denialism. That is to say, that he is not a completely rational being either.
But hey, who am I to judge!
It is hard to know what makes a man behave like a raving meta-monster from hell, even though he should not be completely ignorant.
 Luboš Motl
 The Reference Frame
 Sabine Hossenfelder’s blog