They officially changed the name in 2016. I have to assume they changed what the browser reports earlier this year. For tracking purposes it would probably make more sense to count the ARM version separately from the Intel version, but I don't know if that's correlated to this change or what is. I'm not a MacOS user, though, so maybe the change is public knowledge and I just don't know about it.

statcounter checks user agent strings. it probably depends on the mac browser used to report the user agent string.