Unfortunately no, Microsoft really does not want normal users using this since it removes a lot of the features they are pushing (like Copilot) and a lot of the telemetry is removed. Especially since it really shows how well Windows can actually run when all of the crap isn't there. So there is not a way for a normal user to get a key.

My personal ethical opinion, I have a license key for Windows 11 already. Microsoft does not give me the ability to get a key for LTSC, so I don't have any qualms about using a script to activate it.