I think the “people-first language” is actually kind of dumb in a lot of cases. Because the idea behind it is not really sound.

Shall I now say I have to call a “person who performs plumbing work” to fix my drain because calling them a plumber indicates that they have no worth outside their job? No, that’s not how language has ever worked.

Basically for “people-first language” to exist, you have to create a problem that didn’t exist before to come up with it as a solution.