I've said this before to other replies, but Chris does not need to 'know the law.' The courts require a much, much lower standard for competency where Chris simply understands where he is, what the charges say he did, what the consequences may be, and that the defense attorney is on his side and he should listen. The strong majority of those facing charges in any court probably think that Judge Judy or My Cousin Vinny are good approximations of an actual court. That understanding really is entirely sufficient for the courts to consider you competent to stand trial; you know a basically accurate answer to the question "what is going on?" and your attorney or a public defender can set you straight from there.
I'm only slightly joking when I say that the Sonichu issue with the trial against the Trolls shows sufficient understanding to be deemed competent. It's obviously ludicrous in the details and outcome, but it does indeed show that Chris, at the time of drawing it, understood what a court is, what charges and guilt are, and other broad strokes like that. That's all that the average person knows about courts too. Before this saga began, who here (besides the few generous legal-kiwis who have shared their insight) had any more sophisticated understanding of court proceedings beyond what they saw on Better Call Saul? That level of understanding is all the court expects.
My point is that this is an extremely low bar to meet and Chris has successfully passed it twice before. Chris is at a much worse place mentally than in the Classic Chris days.
The alternative is that Chris is just so lost in fantasy that cooperation with Heilberg is impossible, which is also a massive deterioration in ability to function. If someone knows more about the law or mental health than I do, please correct me, but I think that we don't yet appreciate yet how significant this hospitalization is.
