The player proposed that the ability to don or doff armor as an action is often a magical assets of Arcane Armor which supersedes the normal time requirements. The DM permitted the warforged artificer to get rid of the Arcane Armor as an action, and later on explained the ruling https://warforgedartificer71368.csublogs.com/34171273/dwarven-plate-5e-no-further-a-mystery