Gideon blames the Lord for abandoning them after he took them out of Egypt. When all along it was them that abondoned Him. As we read, they worshiped the gods of the Amorites and not the Lord.
His assessment was totally incorrect. He just wanted the easy way out and put all the blame on God.
It is easy for us to blame God as well for all our shortcomings. If we fail a test, do poorly at work, have problems with our marriages, we tend to put the blame on Him. It is very dangerous to do this. We really need to look at why all these problems are occuring and then we will see the truth. We probably failed the test because we failed to prepare and study. We are doing poorly at work because we are not paying attention or just don't care. Our marriages are struggling because He is not the foundation and we are trying to make it on our own. Get the hint. Do not blame the Lord for all your problems.