Hey there, Barry! Thanks for getting in touch.
Good question–that’s certainly interesting. Events are a custom post type, which means they are posts, but completely separate from the default WordPress post.
If you head over to Events > Settings, there is an option in the General Settings to “Include events in main blog loop.” Is that option selected? If so, uncheck it and save your settings to see if that makes a difference.
Otherwise, it appears that the query the theme is using to pull in related posts needs to be updated to exclude the tribe_events post type and I’d suggest reaching out to the theme author for more guidance.
Cheers!
Geoff