The hope is that Trump is planting seeds that will pay off down the road and he has inspired people who otherwise wouldn’t have gotten involved in politics. But it may take awhile for those seeds to bear fruit.
I definitely believe that Trump served a great purpose in helping to awake America, and exposing the magnitude of the issues facing us. He just hasn’t been as superb at actually rectifying those issues, especially ones he was involved in like the vaccines. But as the old saying goes, you first have to identify the problem(s), before you can fix them, and we are much better off in that regard than we were before. As you say, hopefully the future will bear those ready to address the challenge, but it will take more than any one person.