Not legal advice, but I believe denying all facts even the ones that are obviously true is setting himself up to pay costs for proving those facts, even if he was to win overall.
Nintendo are over litigious and have a reputation for weaponising copyright laws to shut down legitimate competition - but I suspect this might not be a good test case for challenging this.
54 kg of fentanyl is an insane amount to have all in one place.
Just to put it in perspective:
I’m not sure why they’d stockpile so much in one place, given they apparently have the capacity to manufacture more - unless they were planning to use it to kill people (see: they also had a weapons cache and explosives) instead of to sell as a drug. Or perhaps the 54 kg is an exaggeration and includes packaging and so on.