[rtpg]

But now you're saying "we shouldn't change dependencies". Pypy turns out to work nicer than CPython? now you have a rollout project to your team. Swapping out some libraries? Another rollout project.

Now, it's great if you can avoid complex setups in general cuz complex is harder no matter what! But if you're starting from a complex setup, having easy ways to roll out changes is an important step in actually doing the simplification work to get to where you want to be!