Wrong: "Yep, I have UNIX experience!"
Right: "These days, the phrases 'UNIX' and 'UNIX-like systems' are used interchangeably. Please double check this with your hiring manager to confirm that we're on the same page."
If I really thought this job was worth my time, I would've updated my resume to say UNIX and Linux, and then clarified during the first interview with a technical person.
Right: "Yep, I have Unix experience! I have worked on Solaris which is a bonafide Unix system. I also have experience with Unix-like systems like FreeBSD and Debian GNU/Linux."
Similarly IBM licensed AT&T UNIX and derived AIX. It is still certified as UNIX.
The Open Group holds the UNIX trademark and copyrights and conducts the certification and licensing process these days.
See here: https://www.opengroup.org/openbrand/register/
You've posted functionally the same comment multiple times in this thread. No matter how many times you say it, you are technically incorrect. UNIX is a valid piece of terminology when referring to commercial Unix OSes.
Did you read my comments carefully? I am saying the same thing as you are. I am saying that Solaris and AIX /are/ bonafide Unix systems in all my comments.