after 3 decades as SWE I mostly found both i) and ii) to not be true, for the most part. a lot of frameworks are not built from the ground up as “i am building a thing to solve x” but “i had a thing and built something that may (or may not) be generally useful.” so a lot of them carry weight from what they were originally built from. then people start making requests to mold the framework to their needs, some get implemented, some don’t. those that don’t good teams will build extensions/plugins etc into the framework and pretty soon you got a monster thing inside of your codebase you probably did not need to begin with. i think every single ORM that i’ve ever used fits this description.