If you assume people are more or less fungible except for some "Q" (quality measure) sure, you probably wouldn't hire someone without a degree. You would sort your applicants by "Q" and drop everyone below a cutoff. I suppose I would call this the "human resources" view.

On the other hand if you have a team of domain experts who are passionate about subject "S", they don't actually care about "Q". They care whether you have deep interest, expertise and potential in their domain area. They want to know what you can bring to their team. Now, a lot of times a good candidate will be someone with a PhD in "S", but it's not about the qualification. It's about "S".

"No degree" hires usually don't come in the HR front door as a "fungible human resource". They usually get noticed or referred by someone passionate about "S", for a job doing "S".

I don't actually know if this was the OP's situation; there are other ways this can work. Good recruiters will try to hoover up talent by searching for people with relevant work experience (substituting that for a degree) and throw them into the funnel.