Well I've never considered that apple does loosely follow it.You all know that SemVer is a thing, and apple loosely follows it, right?
Yes, in decimals 10.10==10.1If we’re being extremely technical, after 10.10 Yosemite, they started to make less and less sense. 10.1 and 10.10 are the exact same number. Obviously, puma and Yosemite are two different operating systems, but I think you get my point. 10.15, which was Catalina, is actually a smaller number than 10.2 jaguar was. So Apple attempting to get away from that confusing mess is something that I appreciate.
But in software, 10.10 is what comes after 10.9 if you're not ready to release 11.0
Major dot minor dot patch, you +1 to patch for hotfixes, you +1 to minor for bugfixes, new features, new code, and you +1 to major only when introducing backwards-incompatible breaking changes.