If you exclusively belong to communities that don't have such measures, you will be dominated by third parties who create mass accounts instead of the platform.
Choose your poison I guess.
its a data harvesting exercise
In other words, some less-thinking Linkedin employee decides to do a thing without adequate consideration of all the information available (such as length of time of membership). Maybe Linkedin let some moron apply rules, or Linkedin is grabbing data for marketing/sales purposes, or there's an explanation we haven't realized yet.
Looking at the Reddit account they can be ten years old but with no activity at all in the last five or so years, then a sudden wave of these scam posts.
Those guys would enevitably get sappy and I would rope them onto a sales call with me as a bait and switch. I hated doing sales as well as myself and got out of it in a year.
Making a fake burner linked in was trivial.
Regardless, I use it to troll people on LinkedIn now. Especially CEOs who post nonsense.
Agree? (See what i did there)