Gary, when I see this happen, I post a comment on the affected profile along the lines of: "Someone recently [describe the change]. What is the source or evidence for this change, please?"
And if it's already been discussed in the narrative, I add something like: "As already described in the narrative, [describe why the recent change isn't supported]. Has there been something else published that sheds new light on this subject?"
Frankly, nine times out of ten, I get no response. I wait a month. Then I'll post something like, "lacking a response, I'm reverting the edit referenced above." If others respond supporting the reversion, I will act more quickly.