There's nothing Cursor can do that GitHub/Microsoft can't in 2026... And vice versa... after several years of Cursor vibecoding a GitHub clone while catching up with GitHub's new features. Git's performance it's not the issue; it's GitHub Actions, PRs, etc. The moment Cursors steals paid GitHub customers and gets the same workloads, they will start having similar issues! Stealing engineers who couldn't fix this at GitHub won't make much of a difference. GitHub is not just source control; everybody can set up Gitolite and have an amazingly configurable and secure Git setup. I did this 10 years ago, and CODEOWNERS, protected branches, and tags can't do 1% of what I had done before. Cursor is going all over the place as it can't compete with their model. So, this is a defeat, a pivot, not something glorious!
I'd argue that for whatever other faults they have, Composer 2.5 is pretty competitive as an implement-planned-work model. It's several times faster than Sonnet 5, cheaper, and performance is comparable.
Ears wide open for a model that does better for the same parameters. Pareto efficiency is important, but Anthropic doesn't seem to care about it. They desperately need a Haiku 5, IMO.
Perhaps you didn't read the article, but the implementation they describe is interesting and perhaps easier implemented in a new project from scratch.
It can't be any worse than current github, and since we've heard plenty of people express their dissatisfaction with github recently, this is actually a good direction for Cursor. A product people may want. We'll see.