I think Blazing Saddles is something of a product of its time. And in comparison to say Young Frankenstein (another homage/satire of a genre) it is probably more mean spirited since it's confronting something that is essentially very mean spirited in itself.And this may make me dead to you, but I find Rustler's Rhapsody almost unbearable to watch. Too much of a cheese factor for me to take I guess. (And perhaps a bit similar to how I find much of McFarland's material - too few laughs for the being forced to sit through the rest of the content feeling intellectually insulted.)
Ha! You'll never be dead to me, Zeke. I'm really used to RR not striking most people as funny as it does me. And thanks for the comment on Blazing Saddles. I think you're probably right. I do have a hard time getting into most mean humor even when it's mean for a reason that I understand.