"set up to fail"
I think she was failing for a while now, even before 2020. . .
Totally agree. But the situations she's been publicly put in charge of are high profile, impossible to solve situations for most presidents or VPs.
If they wanted to groom her for President, they would be giving her softball issues to spearhead.
It's like giving her the mandate to find a cure for cancer, the solution for world hunger, or the answer to poverty. Some problems are unsolvable.
In the problems I listed, border crisis and Ukraine, there may be solutions, but she's not capable of finding them. Her incompetence is on full display for all to see. And the reason she's bing "set up" is because (1) they don't want her to run for President -- and if she does, they don't want her to win, and (2) they don't want the problems "solved", because their agenda depends on the chaos and results the problems are creating.