Is it safe to use hyper-threading (SMT) with Qubes OS if done the 'correct way'?

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When reading these discussions it looks like the threat is major, but if everyone running Windows/OSX/Fedora/Debian/Ubuntu/Archlinux/etc are vulnerable (so including servers?) then I’m quite confused about it, because then everyone not running QubesOS should be sweating. I’m not saying it’s not serious and security is not important, I’m just trying to find my personal balance between security and usability, and ways not to go back to Fedora because I can’t play a video smoothly :sweat_smile:.

[irrelevant comment retracted]