I'm prob a little bias. I smoked pretty heavily for 8 years of my life. Did a year in prison with another 5 years suspended for it. I always hate to see penalties for smokers and I'll admit my hardcore pothead days is what drew me to Diaz in the first place.
But rules are rules, regardless of my opinion on the plant, legal or sport wise, it is a banned substance.
Though I didn't know Diaz went that far as to try and sue them over it. I agree with you he should just fell in line like Overeem did and bite the bullet on that.
On a side note, love your new avatar!