It's a great talk. I can't remember whether he says it directly in the talk, but the upshot of his argument is that the "major version" part of SemVer is pretty

It's a great talk. I can't remember whether he says it directly in the talk, but the upshot of his argument is that the "major version" part of SemVer is pretty much useless information to library consumers, and suggests that rather than using major versions, libraries should just change their names.