I generally don't research where various things I'm using come from. However, if I see the same types of issues in an app or website that I would generally see in a phishing email, alarms start going off in my head and questions start getting asked... "Is this a legitimate service?", "Is my information going to be stolen or sold?", "Is there a backdoor for government access?"... stuff like that. Making sure any English used is correct and a user doesn't run into any non-translated sections goes a long way.
Of course, I'm more paranoid than most. I won't even use apps, by anyone other than Apple, that do anything with facial recognition, as I assume they are all harvesting data to use for nefarious means. The success of Snapchat makes it pretty clear I'm in the minority. Apple gets a pass from me, because they have a revenue model I understand that doesn't involve selling user data and they make a point of doing the stuff on-device whenever possible. They also aren't going to destroy their reputation over a few bucks.