I actually disagree with you here, because the Gates Foundation does more measurement and changing based on measurement than any other educational group I know of. That is why he says 'there is nothing to show for $5billion effort,' because they tested the things they tried, and found they didn't offer real improvement. So they moved on to try something else.
About the common core, I'm not entirely sure what the criticism is. If you read the summary,
it looks like an improvement in both math and English. The focus is on making sure kids understand math, rather than being able to solve problems.
Some teachers criticize standards like this because they advocate 'teaching to the test.' Well, if your students aren't able to do basic math, they would be better off if you taught to the test than whatever you were doing before! It wasn't working!
If someone has read more deeply through the standard, and has found things that should be changed, then that would be really interesting to hear. But 'he is rich!' is not a valid criticism.