At work, we've been using a new JS framework paired with server-less infrastructure for the past 9 months. It's barely production stable, so it's been painful, but hey look at our fancy new framework.
When I started a new side project, I wanted to get an MVP out as quickly as possible. I opted for PHP/MySQL, and development time felt like lightning. It was so refreshing.
I plan on rebuilding the code base, now that the side project is making money, and perhaps I can use newer tech for that, but quite happy sticking with PHP for MVPs.