This 100%. Engineers really lack understanding in marketing and branding.
No one cares if you are "first". They only care if your product is known by as many people as possible and is better than all the other alternatives at solving a problem that is worth paying for.
If you don't market, then no-one will care that you exist even if you solved a problem decades ago. Someone else will use your solution and take inspiration (and credit) off of your discovery because you didn't bother to tell anyone about it.
This is exactly what happened here.
another way to look at it, a product is the whole experience (landing, docs, sales, support, code, branding), not the implementation of an algorithm or process
Sorry, but he did tell people about it, no? He showed his receipts. Reddit, arXiv- What I am seeing here is "it's just better marketing". When it comes to prior art, is better marketing sufficient? On one side we can say it's better marketing, but on another side, the side that should actually matter, coming from the direction of him being first, can't we say, it is just better research? Being that he was first and all, and Jev hasn't even published anything according other than what I read. What I am really trying to ask is, is marketing even relevant at this point? So if you have good marketing, you can just steal someone else's work, intentional or not?