I always thought that, by committing suicide, you were helping to confirm all the negative things people say about you.
I think that none of us can know the pressure this man was under. He was reviled by his students and fellow professors. He has been under this type of stress for decades. All of this constant negative action against his opinions and him personally, including wanting to take his job from him.
The pressure that was put on him by the leftist mob was unending. Unless you have experienced something like this, I don't think we should judge. He may have felt completely alone and abandoned.
May God grant him peace in the afterlife.