Hi Ash,
You’re quite right that it isn’t a page in the sense of a regular static WordPress page. It’s possible to detect if you are on a Community Events page, though, using helper functions like this one. So, perhaps, you could make a change to the relevant section of your theme so that it loads an alternative image in these situations?
// Community Events page? Use an alternative/placeholder for the
// featured image
if ( tribe_is_community_edit_event_page() ) {
echo '<img src="..." />';
}
// Otherwise display the post featured image as normal
else {
the_post_thumbnail();
}
That is of course a very broad outline and the actual code or solution is likely to be different, depending on how your theme does things. Hopefully it gives you some options to explore, though.
Does that help?