It all started because he was shitting on the NY Times for being an ad-ridden mess where you have to call a human in order to cancel your subscription. Someone called NY Times woke communist propaganda and Linus went nerd rage on them.
Maybe he doesn't have the time to form the correctTM opinions about everything that exists in the known universe. I just look what he's doing and has been doing for the last 3 decades: writing an open, free and secure operating system that everybody can use. Linux is IMHO the proof that something like communism can work in the real world. Nobody owns it and you thousands of people work on it from all around the world. If people can collaboratively write software together then we can theoretically do everything together. Also: our modern world wouldn't be possible without Linux. It runs everywhere. Windows is just on a tiny fraction of all computers.