TLDR; I believe a lot of people mistake price discrimination as age discrimination.
Long version: Let's say you need some code monkey to slap together go or rust services. Well, sure, you get a lot of people applying with 25 years experience, you also get a lot of people applying with 5 years experience.
Now here's the rub, it's highly unlikely that anyone's been coding go or rust services for 20 years in any case. (To be honest, it's even unlikely that anyone's been coding go or rust services for 5.) So any of those applicants, as long as their references check out, will do.
Which salary do I want to pay?
If I have a low level, quasi hardware layer service that I need coded in C or C++? Fine, yes, experience matters. It matters a lot in those instances, and I'd be foolish to hire some kid to do that. But there is less and less of that kind of work. (Flip side being that such work is more and more critical.) The dirty secret of the tech industry however, is that most work is just CRUD equivalent stuff that could be satisfactorily accomplished by any warm bodied techie. So it just makes no sense to pay more for those warm bodies.