Well it’s possible in Events Calendar PRO but not Community Events.
The checkbox comes from /wp-content/plugins/events-calendar-pro/src/Tribe/Geo_Loc.php
You could add some JavaScript to the admin that checks #VenueOverwriteCoords by default
Alternatively, you could filter — using hooks related to get_post_meta() — for the _VenueOverwriteCoords custom field.
Either way you go, you should ensure it has the necessary protections against applying to things outside of the expected context of editing a Venue.
This is not as easily possible (not that JS or PHP for Events Calendar PRO is “easy”) for Community Events because the custom coordinates inputs do not exist on the Community Events Venue edit template.
If you need some coding help, you may want to ask your own developer or reference our Customizations Documentation, which includes a link to Hire A Freelancer.