It's not a "fine line": it's unnecessarily offensive. Your overall point is fine, but the wording is not. Even if it's eventually delated, comments like this

It's not a "fine line": it's unnecessarily offensive. Your overall point is fine, but the wording is not. Even if it's eventually delated, comments like this tear down the community that lots of us care about. Excuses that you are only doing harm because someone else caused harm first don't reduce the damage. Please continue to share your opinion, but start with the less offensive version.