I switched from UE to ST entirely because of UE's licensing/activation model.

Maybe it is different now, but UE used to require an internet connection for the registration... or you had to email your info for offline codes.

I have a bunch of isolated machines at work, physical and virtual, and got tired of dealing with UE and its registration requirements. Especially when ST gave a license key file I could copy around as needed.

So I switched. But yeah, I remember UE was a really good editor. Now I'm happy with ST.