indeed. this is largely legacy, but good luck changing that. I can't say that i miss it much, but then I don't work for either of these 2 entities. I'm familiar with what you are speaking about, so I don't think the lack of respect stems from a general ignorance of what you are referring to. It's rather people who have interacted with PHP in the past and didn't enjoy the experience.
I'm familiar with the usage stats on wordpress, lol.
I can't say that this is a good thing, but if it suits your needs, have at it.
I see no reason to start any greenfield project in 2019 in PHP unless you literally only know or ever want to learn PHP.
I could be wrong in terms of the entire language and it's ecosystem could have changed in the 18-20 years since I deliberated interacted with it last...
We have a lot of things since mod php, so there's many other options, most of which don't involve PHP, so I suppose true fans will build their web apps in forth, I dunno...