You have not understood his english well it seems, but you're not wrong, of course he cannot change it all at once, And to me he didn't seem particularly blissful that day, the day he was elected was much more historic than this one to me.
"the ways we use energy strenghtens our adversaries and threaten our plan"
He means if the americans continue to use petroleum like drag car racers, it's not going to work.
Thus he truely says every american is responsible, unlike what you seem to think ; I found him very courageous to speak like this, because it could have easily turned into a BOOHYA you're insulting the american people.
They let their pride being stepped over for the sake of honor alot that day, I even suspect many turned a deaf ear so they would not be shocked.
He did put the blame many times on the capitalist way of life and said in a nicer language that if the freakin rich idiots and companies didn't start giving to the poor and hungry children in the world, that he would himself force their hand.
Yes he said that ; what amazes me is that some people hear completely different things from his mouth, I suspect mass hypnosis techniques here, it's kind of unreal.
He even said there would be more work on alternative energies, and the next day of his inauguration on the american tv networks, for the first time in 8 years, publicity of wind and solar power are "allowed" on the air in peak hours ; he kept his word.
He also just signed documents that DRAMATICALLY reduces the power of industrial lobyists, if you had seen the face of the people that gave him the papers to sign, you would have smiled.
Those people handed over the documents with a face saying like : Oh man is he really going to sign this, is that really possible... holy shit holy shit, gimme a joint someone I need to smoke !
And it's just a start.