This is just a humble suggestion from a fan. I see that you have an public enum Parsers { } to use as a namespace, like Combine does with the Publishers type. But you've still defined sever...

Recommendations for effective view models when working with RxSwift.

“@jasdev @mbrandonw We still need to bind Outer to something to use it at a call site and ground the type. Any remaining generic allows us to create different types, like Email and Email, which might be totally what we want! But they’re diff types.”