This is the way it always works.
Step one: cut taxes (particularly on the very wealthy) to produce growth.
Step two: the growth doesn't appear.
Step three: oh, we can't afford the protections we had because we didn't get the growth we hoped for. So we'll cut support for the most vulnerable and other government projects. And we won't reinstate the top rates of tax.
Every society has to strike balances. But it's hateful to favour brutallism and gross inequality while pretending you are chasing growth.