This ignores the problem of not using a framework, that is, for a sufficiently complex project you will eventually end up with your own ad-hoc framework if you don't use an existing one. Maybe it's better, maybe worse, but one will appear regardless.

That's how Django and Rails started (and I'm sure many more). Ad-hoc frameworks that then get yanked out of the project so the company can re-use the useful parts.

I've seen quite a few ad-hoc frameworks companies have inadvertently created in their effort to "not use a framework", rarely were they nearly as good as what was already out there in the OSS world.