It seems more likely that he isn't up to the job and should be replaced. Political factions ensured his rise to the position knew this.
Even if you start with the assumption of incompetence over malice—this is the same guy who paid Duke $750,000 to admit his son, and has well documented conflicts of interests in his role as postmaster general. He's a political appointee for a party interested in undermining USPS while he funnels contracts to XPO, a company of which he still holds $75 million in shares. Simple unadorned corruption, that's all.
Hard to guess when not much at all has been happening over the past year.