Most conservatives don't "lay the full blame" on Bush. They are realistic. Bush was a mixed bag. Generally, most conservatives admire his tenacity in pursuing an unpopular but necessary war and his vigilance on the War on Terror. Most conservatives are happy with his Supreme Court picks and tax cuts. However, most conservatives are horrified and depressed by his massive, LBJ-like expansion of government. Pointing this out isn't "laying the full blame" on Bush. There's way too much of a "circle the wagons" mindset about Bush.
I agree with your comment, but I thought you were going to write, "There's way too much of a 'circular firing squad' mindset about Bush."