Conventional commits made it easier to generate changelogs and automate semantic version bumps. I suppose LLMs can usually do that the right way with looser structure, but in the before times it made a lot more sense, and even now is much less ambiguous
They're hand-waved away by saying the changelogs are bad and the semver isn't always accurate. While I mostly agree with, that doesn't mean they don't provide _some_ value. You get categorized changelogs (even if the messages are technical) and semver that's generally correct. The alternative of good changelogs and perfect semver isn't free.
