That is a perfectly level-headed response. Signing keys must be protected. In the event of a hostile takeover, where a malicious party seeks to compromise the privacy and security of your userbase, destroying the keys is a sensible decision. Failure to do so, and successful compromise of the keys, will let the malicious party push whatever update they want, and it will be accepted due to being signed correctly.

It was not a disagreement about shares, it was a hostile takeover. Someone who never owned the project sought to steal it.