I recently ventured into the shark-infested waters of Facebook, but only so that I could access our village Facebook site thingy.
It's been very useful during lockdown to see what's happening in the village (a pig escaping, people selling plants outside their front gates, a lost cat, the odd break-in into someone's shed etc.)
I haven't put a single photo on there, wouldn't even know how to. Even my profile doo-dah is just a blank silhouette. I haven't posted anything at all such as a comment. I just look and read, then vanish!
But it does astonish me at the daft stuff some of our villagers feel obliged to post, One woman has created what she calls an 'avatar' (??) of herself, a sort of cartoon. Another keeps bunging in 'me-mes' (is that the word?) and another puts on short videos of her feeding her sheep!
I reckon parents of children have the absolute right not to allow fond grandparents to post photos of them if that's their wish. There are some weirdos at large on the internet and it's a dangerous place in many ways.