Comment by dwaite

> it doesn't qualify without the temporary waiver

The nature of temporary waivers makes this untrue per the post you cited - The Open Group only grants them for 12 months, and the post is over a year old.

IMO, the only significant call-out is APFS case insensitivity by default, which makes the default volume a non-conforming filesystem. However, UNIX certification does not forbid you from mounting non-conforming filesystems (such as FAT32). Instead, this means the majority of software which makes certain assumptions about being used with UNIX conforming filesystems in addition to running on a UNIX conforming operating system are at risk of breaking.

Let's just say I have my doubts the author would have written a similar post if the final HP-UX release had "lied" about their certification by shipping with root login disabled by default and ulimit -c defaulting to zero.