...the issue is the community, and (especially) the pool of applicants we get. It may be different where you are, but around here you advertise for a "senior backend dev", and you get a bunch of people with solid experience in, mostly, Python showing up, with maybe a sprinkling of .NET and Java. (Two of the biggest IT employers in town use Python, which skews things a bit, I know.) But you advertise for a "senior PHP dev", and you get all sorts, but (so far) no one we'd consider hiring. (Let me put it this way: The next time one of the "PHP devs" we shortlist turns out to have ever written a functioning unit test will be the first time. And these are people with years of experience, applying for a senior role...)