I mean, I think a lot of times it is drilled in to people as “best practice” for working in a larger organization.

To some extent this makes sense from a managerial perspective, like, you can move people between projects and expect them to pick up where the last person took off since it will be somewhat intelligible.

I’ve seen some nightmares though where projects were barely function because a bunch of unnecessary stuff was added to make it fit the shape.