> Social media networks like Facebook and Snapchat aren't like this.

Correct. They're not that terse with their terms. You'd have to read so. many. paragraphs. to figure out they're doing the same thing.

Instagram's terms of use have essentially the same clause:

> We do not claim ownership of your content that you post on or through the Service. Instead, when you share, post, or upload content that is covered by intellectual property rights (like photos or videos) on or in connection with our Service, you hereby grant to us a non-exclusive, royalty-free, transferable, sub-licensable, worldwide license to host, use, distribute, modify, run, copy, publicly perform or display, translate, and create derivative works of your content (consistent with your privacy and application settings).[1]

[1]: https://help.instagram.com/581066165581870

I denied FaceApp access to my photo library and all apps are denied access to “Background refresh”. I didn’t post pictures directly to any social media. So exactly what does FaceApp have access to besides a few selfies? I was more interested in seeing how good the machine learning was than anything else. It was pretty good, it recognized different angles, it didn’t try to put glasses on my face when I was already wearing glasses and didn’t try to add a beard when it saw I had one.

But they are, Facebook has exactly the same rights to use any photo you upload royalty free or to share it with the 3rd parties as they find suitable... perhaps the legal wording is a bit different, but the rights are the same...