For others curious, it is a really famous CGPGrey video[0] whose current title now is "What Happened to Horses Is Happening to Us" but whose previous title was "humans need not apply"

it is such a popular video that it has its own wikipedia page: https://en.wikipedia.org/wiki/Humans_Need_Not_Apply

[0]: https://www.youtube.com/watch?v=7Pq-S557XQU

ah I thought it was a reference to "Irish need not apply" phrase from job postings that would discriminate against Irish applicants. This is a less off-putting reference.