Just because the author was literally diagnosed with schizophrenia doesn't mean his ideas are crazy, no matter how much evidence suggests so.
He gave a lecture about the Time Cube theory at Georgia Tech in 2005.
https://www.youtube.com/watch?v=uMZdNyRIATo
And a lecture at MIT in 2002 which I can't currently find.
If he was really crazy and his theory was "stupid" like countless people are saying, could he really have been invited to have multiple lectures at such prestigious US schools?