If users don't know that identifying EXIF (and XMP) metadata is automatically inserted, or if they don't know how to shut it off (both of which are true of most people I know in person), then, yes, the government of their country definitely knows more about them than they think it does.
It is easy to laugh at Parler for not stripping this data, but do our Fediverse sites strip it? Does Twitter? Do Facebook / WhatsApp / Instagram? (I haven't checked to see whether any of the above does so.)
Isn't Parler just something like WordPress + some social plugin?