I'm happy to search for sources for any edits you send, as that is part of managing memorials. I'll also provide sources for any edits I send - it is your responsibility to check them. From the memorial management section of Find a Grave help:

"If the member is sending the edits in order to update the memorial, then as the manager of the memorial, you have the responsibility to research the edits that are sent by 'Suggest Edits.' You should accept or decline the update according to your research or the research that is sent to you."

Denying edits for proven information, or edits that link family members together, does a disservice to everyone who uses Find A Grave as a genealogical resource (which it definitely is).