Sounds like you had to maintain tests with the wrong kind of coverage. IMO there is an art to crafting tests that are economical. They should cover core featur

Sounds like you had to maintain tests with the wrong kind of coverage. IMO there is an art to crafting tests that are economical. They should cover core features that pay for the business, ideally as coarsely as practical. Some coupling with the implementation is inevitable, so I prefer it be at the highest level that can be maintained. Have you never seen tests catch bugs that otherwise would have gone into production?