I feel the influence of the framework is stronger in the case of libraries like vue, angular, or react. In those cases, your application lives within the shell

I feel the influence of the framework is stronger in the case of libraries like vue, angular, or react. In those cases, your application lives within the shell of those frameworks, and migrating to a different framework means reimplementing almost everything. Frameworks like Django, Flask, FastAPI and others are different. It depends how you use them, but they're just libraries for the interface layer of your application. Like you say, inversion of control is the key: you want to make the interface depend on your code, and not the other way around. It should be possible to switch between frameworks without having to make changes to your controller/business layer.