Because the Trump militant understand and practice that if they cannot dazzle, they must baffle.
I get that Trump has never gotten this far running for public office and, as a result, he is going to stumble. But these flips and flops will cost him votes. One of the big reasons he's gotten so far is his hawkishness during the 2016 primary on illegal immigration. If he goes soft on that, along with his Muslim ban, that eliminates the reasons people have to vote for him. Not that mass deportation was ever going to happen. But his supporters, like his promise to pay off the debt in 8 years, believed it. Without question or doubt.
Over time, you're going to see a little more buyer's remorse. You started to see it in a small dose with his stance on taking away gun rights from people on the No Fly List. This is what you get with open primaries were Democrats can vote and engage in their own Operation Chaos....against us