There are two forces at work, Trump and the Republican party. The gaffes are all Trump, the sweeping executive orders mostly the party.
He never had much of a platform beyond "build the wall!", and is happy to roll with Republican dogma. The Republicans proved during the last administration that they're willing to bend the rules to breaking point to damage their opponents; they've decided they're willing to humor Trump so they can get him to do what they want.
If the president were a more established Republican like Ted Cruz, we'd still be seeing huge and destructive changes to health care, climate change policy, etc.
It's hard to know which is the bigger threat. Trump is a new style of threat in the way he arrogantly ignores the old polite conventions and even the law itself, lining his pockets in plain sight. Letting that pass unchallenged could result in a permanent autocracy, one "strong man" after another.
The Republican party is "just" pushing an extreme agenda, similar to what they did under Bush, which is more of a known threat (or not a threat at all if you agree with their platform). But they're also neglecting their duty to push back against Trump's abuse of the system. They should be fighting tooth and nail to force him to sell his businesses.