I strongly disagree with this. Seems to me a killer idea is worth a great deal.
facebook was an absolutely killer idea, which is why Zuckerberg lifted it from the Winklevoss twins.
The person that I was discussing with referred me to https://sive.rs/multiply which I had a look at and the way I read it, Sivers was clearly stating that ideas have value, and that some ideas are worth more than others.
Of course an idea is worth nothing if not executed upon, but that does not mean the idea is worthless.
What do you think - are ideas worth nothing? Is execution everything?
Fleshing ideas out and executing is where the value is.
Ideas can be quite useful on their own! Good ideas can make better ideas. And mental models are usually useful without execution.
But I think "Brilliant Ideas" can be dangerous without execution. I think Brilliant Ideas without execution can trick you into thinking you're much smarter than you actually are.
We judge on acts done, not things thought. Thought expressed is a kind of doing. But more concrete actions from ideas to expression usually is the arbiter here.
Writing or recording helps. This changes thought in one person's mind into thoughts in many. If they act beneficently that's an instance of thought having high worth, measured as concrete actions and outcome.
Even just making people feel better about themselves is a kind of action. A surprisingly good one.
Truly robust discussions sometimes lead to published papers. Your discussions are ones struck up and quickly forgotten by fifth graders.