When I was younger, a lot younger, I had an older guy tell me "all women are crazy" as advice. At the time I thought he was an idiot (to be blunt), but now I think he just didn't phrase it right. From a guy's perspective, all women aren't guys and don't think like guys. That doesn't make them crazy, so much, as make them women.
Kind of like my wife stopping sometimes and saying "you are such a guy" when I've acted normally (but "wrong" from a woman's perspective). For example, ask a guy to do something and he does it. A woman almost always will think he hasn't because he hasn't done the related things. A guy doesn't seem them as part of the same thing (and if the woman asking him to do whatever the task is also asks him to do the other jobs, what she would call "the rest of the job" he will happily do that too).
Such as "please fold the clothes" means also to put them up after folding and put the fresh sheets on the bed after folding them. It is amazing how much happier you can make young couples by teaching the wives to ask their husbands to do the other related things and by teaching guys that their wife means "do a, b & c" -- once they understand it, they are much happier doing what what make things go well. Twenty years of their wife saying "you didn't do 'a'" won't work. Because they did do "a." Five minutes of saying, "your wife may say 'a' but she means 'a, b & c'" works like a charm.
Anyway, are all women crazy? No more than all men are crazy. But, with work and patience they can not only love each other, they can make each other happy.