For web backend, being able to ship a single binary, such as what Rust and Go can provide, is really nice. I don't see PHP as a more compelling solution than either of those languages. Scripting and command line automation is executed better by Python and Ruby, which excel for writing Unix scripts and tools. I do not see what the use case for PHP is in 2020. PHP has one of the most abhorrent language syntax designs t…
In PHP you just need to add to your HTML page a few lines of PHP code and copy it using scp to any share server hosting that costs 4 dollars a year.
No "automation", no "cloud", no REST APIs, no WSGI/Gunicorn, etc. just plain Apache with mod_php enabled, which is available everywhere. I don't think anything can beat PHP productivity for such simple usecases.