I think OWC putting a link to OSM is wonderful.
Although I personally don't need it because I use gancio which already has the OSM links.
the thing is that some events say "Location:" and then are followed by an URL. These are online events.
But OWC doesn´t understand that and uses the URL to make a search query on OSM.

Proposed Solution:

One solution could be the ability to turn off and on OSM link rendering in a calendar. Something Like:
Would you like to make OWC compose an OpenStreetMap search query link when it finds the word "Location"?

Another solution would be to have a condition in which, if the string "http" or "www" is found after "Location", OWC will not try to compose the link.

more info on the issue I originally filed at gancio, but it was not a thing of theirs:
https://framagit.org/les/gancio/-/issues/402

Thanks