I always remove this data from my screenshots before sharing, but is there any way to prevent this from happening in the first place? I've searched and searched, but all I can find is information about how to remove the data after the fact, which I already know how to do, but it would sure be nice if it never got added in the first place. Thanks.
I don't know of a screen shot app that works without addind metadata to screen shots. What I use is "Metadata Remover" from Fdroid: https://apt.izzysoft.de/fdroid/index/apk/rocks.poopjournal.metadataremover
You take a screen shot, open the screen shot image from Metadata Remover, click on "Remove metadata", and the moment it's done, it'll take you to share automatically.
I hope this helps you.