The president isn't a dictator. He will have a large panel of advisors, and I believe people can learn, and change.
His comments about it being a hoax was from 2012 and he claims it was a joke. He often speaks off the cuff and unfiltered. people like to interpret what that means to their own benefit. He just doesn't want to deal with globalist environmentalism, but does have concerns about the environment, how extensive those concerns are and what they will entail is yet to be seen.
Even though the senate and house are now all one party dominant, that party pretty much imploded during this election. So, not everyone is on the same page as trump. that being said I predict a lot more will get done, what will get done is yet to be seen.
I remain hopeful.