Apple have been doing this for the last 5 years at least.
I support a large fleet of Macpros (Ha, yeah "fast" and "magical" with 5 year old procs in them) Everytime an OS upgrade comes along something is silently broken. Trying to get support is a nightmare. For example when they changed which version of kerberos they used without any warning. Or changing the syntax of automount.
Apple are shits and have always been. Just like google[1].
[1]don't get me started on them. they keep on pissing about with the admin console for paid google apps, without warning.