I completely agree that being able to navigate an ecosystem's complexity is a skill.
I didn't mean to imply that other languages don't have complexities. All ecosystems come with their own boons and complexity issues (hidden or upfront). The thing I wanted to address is the general idea of "PHP is the simplest to develop in, it's just uploading a file" (paraphrasing) shouldn't be taken at face value, and that's why I pointed out some of the complexities when working with PHP that PHP developers tend to forget (or some ignore).
But, because PHP is so easy to get started with, a lot of the complexity initially gets hidden away, and sometimes people learn about it the hard way.
JavaScript used to be much the same, but it has gotten better in the recent years. Maybe PHP has gotten better in this aspect too, but I could be ignorant because I've not been keeping up with PHP as much