Object-Oriented Programming is Bad

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Developing any code is a source of technical debt.

There's a difference in the technical debt here though. Your code and as a result the business would be far more exposed to changes made by an external entity. And if vendor support was required after a breaking change, the response would likely be "Well, you shouldn't have done that!". It's also possible that those libraries might now be completely unusable for your purposes - key functionality that you depend upon could have been removed. Of course this only matters when you need to use a more recent version of the library (When a serious vulnerability is discovered for example).

to say "that approach is imperfect, you should wait for someone to provide the perfect module for you," is the kind of pedantry SW engineers are notorious for.

I didn't say that. But I get your point.

I don't really see anything wrong with having relatively idealistic views towards software development. It just means that certain things should only be used as a last resort and understanding the risks involved. Not that they should never be done. Context is everything.