It's funny that in the podcasts they talk about how Monty was so efficient he'd rip out any keys on his keyboard he didn't need, use nine screens, drive because even though it was within walking distance it was still faster, and would hit five three times on a microwave because it was less movements than putting in six minutes even. And then you hear from the animators who had to actually work with him and they fucking hated the dude because to them, he just made more work for them.
And yes, he was definitely autistic.