User blog comment:MisterWoodhouse/The first migrations to the Unified Community Platform/@comment-43826407-20201124175546/@comment-1038387-20201126210825

Nope. They don't make the code, that comes straight out of the box of the Wikimedia Foundation. They make minor changes to suit their needs, but it comes with standard editors. If you buy a new car, you don't rip out the seats and weld in the ones from your previous car just because they were comfy. Especially since the mounts don't match.

That's all a waste of resources. It's an expensive process. This is not a cut corner, or even a shortcut; it's the highway.