You can't imagine why it's wrong for him to sign an agreement undertaking to uphold their good name and not disclose confidential info, only to then go back on

You can't imagine why it's wrong for him to sign an agreement undertaking to uphold their good name and not disclose confidential info, only to then go back on his word on both points here? To make it worse, $META is a public company. Confidential info is even more sensitive for a public company. Whether you like Meta or not plays no part.