That worked for me on Gallery 5.0.3 to remove camera model and date taken and it needs to be removed from all themes, I also keep a copy of the original template code
Yes this is the main feature I can't understand because when I click on Find content in the users profile page and click on Gallery>comments it doesn't show comments that user has made on others. It only shows comments others have made on that users content (pictures)
I will submit a support ticket though because they could probably see the issues straight away.
Overall though the leap from gallery 3 to 5, and forum 3.0.5 to 3.3.4 I expected some issues but I like the new layout, features.and integration. Thanks