I totally agree with this. PHP is a perfectly serviceable language with a lot of benefits from a higher level, business point of view.
Here’s a couple more I can think of:
8. Hiring competent PHP developers will also cost far less than than the equivalent node/C#/Java developer.
9. Weeding out bad developers from good developers is easier – have they worked within a OOP framework such as Laravel or Symfony or Drupal 8 or are they a lower skilled Wordpress or Drupal 7 developer?