A user with a much higher reputation just edited my answer. That's okay, a lot of others have changed posts from me e.g. to correct spelling/grammar (I'm no English native speaker).
But now MrMeritology has changed the content of my answer in a way that it reflects the inverse of my original answer. Why are such major edits that delete whole paragraphs from an answer possible without the review and agreement of the original author?
The help pages list the reasons for editing and explicitly say "without changing the meaning" but this is exactly what this user did.
I accept when people not agree with my answer... they can vote them down, or answer with another post reflecting another view. But this really pisses me off. Is this behavior common in this community?