I think this comes from Conventional Branching, https://conventionalbranch.org, inspired by conventional commits (e.g. https://www.conventionalcommits.org/en/v1.0.0/)

And my point is that this pattern is now more popular than it was 3 years ago. Similar to people using the phrase "load bearing".

For me, this popularity is graphable. Telling me it's a convention doesn't change that fact. I'm sorry.