Have you tried to install the it87 driver for your kernel? https://github.com/frankcrawford/it87 (on AUR it’s it87-git)
I have ASUS B450M PRIME GAMING and after installing the driver, the chassis fan sensors were detected and I could use CoolerCtrl to draw the fan curve.
I don’t quite like CoolerCtrl because of its UI, seems to be web based, but it works and has a daemon mode to start minimized on startup.
Can someone ELI5 what’s going on? Seems like they are still fighting about Nix allowing a defense company to sponsor their conferences, and trying to ad hominem the project leaders.