This is a crazy take.

So in your view nothing is worth sharing unless its complete and you “deserve” full credit? So the concept of idea sharing is alien to you?

The idea of proof of concept is not to claim a stake on a concept. The idea is to show the feasibility of something using some assumptions. It allows you to reason about the work and decide if you should commit to further exploring the concept, or it allows you to identify the key hurdles. It also allows you to even just record a thought or idea because it might be useful to others.