Really I'd say the key here is timing. I didn't look into what time the NPM packages were updated, but there are a few key times depending on what markets you're targeting. If it were Indian devs it would be around 2AM CST and if it's US devs it would be around 10AM CST.

This is when I see the ramp up in queuing in CI/CD builds that lasts a few hours across companies and is more likely to trigger a package getting rebuilt.