Is Simple Gallery known to do anything shady now, behind the scenes? I had no idea it was sold either, and it's been my go to gallery app on all my devices for a long time. Just curious.
If you don't use the editors (or if you're using the non-Pro Simple Gallery) then you should probably switch to Fossify now.
If you do use the editors then you should probably disable automatic updates in Google Play, so you get a heads up if they ever push a shady update.