It’s still there because it never got removed. You can read up in wordpress codex that any kind of php insertion plugins are about the biggest security danger existing.
There is simply no safe way to dynamically insert php. If you need it insert files containing php because those can be secured.
Ezphp got pulled by wordpress.org 8 years ago now for being s security risk. Someone actually tried to improve safety and publish it as easyphp and of course it still didn’t get approval.
Don’t destroy your security with a php insertion plugin. Plain and simple .
