I cut my teeth on it years ago, I don't hate on it for cheap jokes. That said I don't know why anyone would pick it to start a new project in 2020. We've been lucky to have so many new and established options that are better in almost everyway.
Recently I had to develop a very small CMS that manages personal web pages and it was a requirement that it could be installed very easily (i.e., by copying a single file) on virtually any hosting provider. PHP was (and is) still the natural candidate for such projects.
such as?
Or Java/Scala/Kotlin. Or Go. Or Python. Or Node + Typescript.
I work with PHP 5 days a week through work and even a few years into it, i still do not like it. Its feels like a mess compared to the other languages I work with for my own projects. Even when working with something like Laravel which do mask a bunch of the pain points of the language, it still feels cumbersome IMO.
For average business owners who buy a WordPress template and some 5€ hosting in order to set up a business card web site on their own, on the other hand, it matters a lot. So if your project targets that group of people then PHP is pretty much the only option; anything more complicated than an FTP upload/MySQL import is pretty much to advanced for them and they generally aren't interested in learning new skills just to get a web site online.
The last thing a non-techie business owner needs is to worry about setting up a random server with bad PHP code.