Do you have a use for that information that is stored with your photos?
If not, you should be able to turn off recording of geolocation data in your
phone either in Camera settings or in phone settings.
On my Android phone there are a couple places where I can control EXIF data
and geolocation information used by apps.
It would be nice if the forum software also checked and stripped the EXIF data
out of uploaded images.
However, the flip side of that is some forum software (don't know about the FOG)
uses that EXIF data to know how to display the image. So if the photo was taken
in landscape orientation that information is part of the EXIF data and without it
some forum software can not display the image in the correct orientation. There
are fixes for that which the forum Admin would have to implement.
More info about privacy concerns and your images can be found here.
https://www.consumerreports.org/privacy/what-can-you-tell-from-photo-exif-data/