When you step outside these mini ecosystems and look at PHP as a vanilla tool to work or to use a proper micro/full framework you start to question why use PHP at all? One possibly acceptable framework, in my opinion, is Laravel. The problem is PHP outside of these mini ecosystems isn't nearly as popular. It looks like people migrate to an entire new language like Python, Ruby, Node, etc. If we're talking about sheer people hiring Ruby, Node and Python typically trump PHP every time and are using frameworks - not Drupal or WordPress. Granted there are custom PHP apps out there and some very good ones but they're not the norm.
I switched full-time to Python using Flask and Django. It's like a breath of fresh air. My 2 cents is if you're on the fence, figure out how to work on one project using this new language full-time. Then you can make a better decision.