I don't like Democrats any more than the next right wing crazy, but that's shoddy reasoning. The last president did damn near as much damage, economically, as our current one has.
Bush 41 fucked the economy with the Clean Air act giving the EPA massive authority, Bush 43 fucked the economy with Ethanol requirements that actually pollute more, cost more, and damage engines all at once. Even the reasonably conservative Ronald Reagan helped pass environmental legislation that had harmful economic impacts of extremely arguable environmental worth. The original conservationist president, Teddy Roosevelt, was also a Republican.
Our current state of insanity where life cycle gases are classified as pollution, a blocked drain pipe or a berm from the county grader gets your property classified as wetlands, and the ethanol added to your gasoline makes even a new car use more petroleum than it would without it, did not come from Democrats. It came from Republicans reaching across the aisle to advance an agenda started by Republicans in the first place.
It's definitely a difference of ideology, collectivism versus individualism, but that's never been a party line breakdown. Progressive collectivists, dangerous fucking morons that they are, are pervasive throughout both parties in the US. They simply disagree on the various details about what the government should be doing in particular once it's running our lives for us.