I think you’re talking past each other. Their point is not that Trump is the only one offering real solutions, their point is about messaging. Trump is willing to say very loudly something along the lines of “we have a big problem and I have a big solution.” The general public knows something is wrong. It makes him popular. Democrats have responded to this by effectively saying “we do not have big problems. We are going to make some improvements.” This is what you might call a less popular message. They need to be saying “we do have some big problems, but those aren’t solutions—these are solutions.
And then they need to actually provide real solutions instead of more neoliberal rot, but hey! First things first, maybe stop running campaign messaging that opposes popular opinion