Sadly 'social media' (including PPRuNe) is full of 'Gollums' who are stuck in their dark little hovels with their 'Preciousss' electronic gadgets. In a dark, gloomy world like that where your skin goes pasty-coloured and your eyes bulge to try to see in so little light, it is very difficult to be anything other than negative. And they see such a minute morsel of the real world that their shrivelled brains make them think that they know everything.
Sadly as well, the proliferation of these electronic 'Preciousss' gadgets is increasing the number of 'Gollums' that there are.
The cure is simple: fresh air, get out into the real world and keep those 'Preciousss' electronic gadgets firmly under control so that they don't control you.
But then, none of those 'Gollums' will understand any of that. (I hope that last sentence didn't sound too negative?!)