I like the idea behind the implementation. The implementation as it stands would kill OSS because majority of the user base of OSS libraries are in no position to pay for every package they install into their fun side projects. This would take away the whole fun point from OSS.

That being said the idea to use package managers as funding channels is not an altogether bad idea. We all use package managers daily and if there were a way to support OSS maintainers through it without any enforcement, it would be huge.

Suppose you install a package for almost every side project. The PM could connect with your Stripe account and allow (not enforce or badger) you to pay directly to the package maintainer. I think one of the most discouraging part of donations to OSS is the recurrent subscription model. If I want to appreciate someone, I'd be open to donating once or twice on my own terms when I like it but these donation platforms force you.

Secondly as a developer I am much more comfortable in my work environment and if donations are integrated into it, I might donate more. Who doesn't like ease?