I can't believe the ALARM campaign has become controversial.
It's not erasing history. ALARM will always have it's original charting recorded. If it enters the top 10 again it doesn't change the original release. It will be known as the single that did not chart in the top 10 at the time of it's release but did enter the top 10 during Namie's retirement era thanks to the fans coming together to support her and show their love.
If it ends up being successful it will be a pretty impressive feat. It's not easy to get everyone to come together for a cause.