I see what you mean about mentioning the company's name, but I have no affiliation with them so it is not meant to be an ad for them. The article you linked is just the Wikipedia page, which doesn't have much other information. I'll remind you that anyone is able to edit those articles, you probably already are aware.

This article ---> https://extractionmagazine.com/2020/03/21/the-bizarre-crystallization-of-%CE%B410-thc/ goes into much more detail about the possible origins of Delta-10. I think that Lupoi (a writer with a Ph.D) for Extraction Magazine is more credible than a flimsy wiki page. Of course even the story in the magazine article cannot be 100% verified to know if that was the first ever discovery. More likely it was just the most recent discover of Delta-10 that came during a time period where there is far more scientists interested in learning more about cannabis.

Companies have been working on ways to recreate Delta-10 since it doesn't seem to want to occur on its own.

With that said, I can't say your opinion on the possibility that stoned hippies circulated this idea of Delta-10 is totally false. No way to know for sure. I am just sharing what I have learned about the topic so far. There definitely needs to be some more clarity on the subject. Hopefully articles like this one will encourage somebody to give us a more concrete answer.