Internet privacy tends to strongly be a generational thing. Millennials, like myself, who were teenagers when the internet and social media came about, were firmly taught to safeguard privacy online. This went out the window with the next younger generation who grew up relying on social media from a very early age since it was there when they were born. It is the center of their lives and they don't care about such online privacy. All they know is status updates and likes and shares. The generations before millennials were all adults when internet/social media came about, so they didn't have the privacy warnings pounded into them.
So, certainly apply red flags wherever you see fit. It's your money. But do keep in mind there is much more to it, and it is more common than some may realize.