This is what I heard from my small engine repair guy....
I've found that most things people hear "from a guy" are either completely incorrect, or are at best only *kind of* correct....and then only after sorting out the missing details.
That may sound cynical, but my mobile work phone rings about a dozen times a day, with calls from people who have gotten themselves into a pickle and need help because of what "some guy" told them.
Then I get home and read my email or log on to social media to catch up with the latest "news and information", and see a lot more stuff that "some guy" told some "other guy"....and it somehow snowballs and takes on a life of its own as people keep "sharing it" and passing it along....