Disagree on the contradiction but want your take on where you see it.

I don't know what your experience is but "never" having seen any issues could also be bad thing, seeing the "don't" is just as valuable as the "do" when it comes to building experience.

Some concrete examples to demonstrate where coupling is trivially solvable would be good if you have some that you can share, where it wouldn't be trivially solvable what are the common mistakes that would be made in those cases?

If you have time to share your experience I'd really appreciate it.