Correct me if I’m wrong but isn’t this fundamentally true for any team working on any project?
This really isn’t true. There are websites and web apps that “work” but are really suboptimal from a performance and UX perspective. It’s possible to do this right, but it’s much easier to do a poor job. You end up with something that kind of works and may even be profitable but which is a boat anchor around your company compared to a better approach.