One small anecdote of a project at work. The oldest current project. All our projects are fairly simple and similar. They all use libraries and templates. This one is the last of the early projects before those templates and libraries. It's the easiest to manage. Things rarely go wrong. No forced upgrades because of a library vulnerability or template update. Bugs have been always been straightforward to find and fix because everything is procedural and clear. No abstraction 7 layers deep. Just clean, simple code.