To them, it doesn't even matter if things get "worse" for a while. Their life is already meeting every economic headwind imaginable.
On the other hand Trump will deliver on another, implicit promise to them, which is inflict pain and suffering on a great deal of people they dislike for whatever reason.
Not so implicit, "I will be your retribution".
And this part is very much a normal Republican position. The realisation that Americans will vote for a policy which hurts them so long as it's positioned as hurting the people they hate was key to Republican success.
"Nobody gets kicked in the head" loses in American politics if it's up against "Everybody gets kicked in the head, yes those awful people you don't like will get kicked in the head"
And when your implementation "accidentally" forgets to kick the wealthy in the head? Well the important thing is you kicked people in the head - you're not one of those scum who don't want to kick the awful people in the head.