Well, it's not like Republicans haven't spent decades railing against the welfare state. The Tea Party tried to shut down the government over it, at least twice. It's not like people can have failed to notice. Sure, Trump claimed to be different but then people still voted straight Republican tickets for Senate and Congress, so yeah, they're getting what they asked for. I'm sure a lot of people believe that the cuts will only affect the undeserving (e.g. not themselves), or that such a flood of jobs will be unleashed that the safety net will be irrelevant, or that private charity should pick up the slack because it's morally wrong to force people to help the less fortunate. Well, if you think it's going to fly, try it out.
Hell, Kansas tried it. They hated it. People did kick up a fuss. And then they re-elected Sam Brownback anyway. So they'd rather gut education and police department and road repair than be governed by a Democrat. Winning!