Re: Suggestion for stories like this...
"or SD card or removable battery Android is your only choice"
Or you can buy a Windows Phone. My Lumia 640 has both.
But back to Apps (and obviously being a WP user I'm hardly qualified to talk about those as there are so few on WP ;)). It seems to me that no one cares about the origin of apps, who the authors are or anything. On a Linux PC, if I was installing something, I'd be checking out the website or open source repositories or professional reviews. It seems nobody cares that the authors are unknown and can't be contacted. it seems that average joe (or janet) user just thinks apps are created in the ether somewhere by pixies and can be installed without a care. No wonder things often end badly.