Conversations don't shut down because ideas are worthless. When discussing or evaluating ideas, especially bussiness idea that involve social aspect, the main challenge is to select right assumptions and projections. Modeling future social behaviour is extremely hard and error prone. So it's not that ideas are worthless, but discussions about ideas and possible realizations are worthless until you start working on them.

> Ideas are the precursors of RFCs and ISOs I disagree. Practice and experience are precursor of RFCs and ISOs.

The great example is HTML, HTTP protocol or even OAuth2. All the related RFC are there to standardize and unify existing and document evolution. They all started with ideas, but the actual adopted standards are results of working groups, that had a lot of experience. And the deficiencies of HTTP1.1 shows it very well, as authors of the original ideas could not potentially know where it would lead eventually.