The problem is any winner-takes-all process. Ranked choice solves ticket splitting.
For instance, many Americans heavily favored Bernie Sanders and Elizabeth Warren who were both policy candidates in 2020. With ranked choice, they would have been the P/VP pairing. Instead, it went to Joe Biden because the candidates all dropped out and gave him their endorsements months prior to the end of the primaries to prevent Sanders' nomination and to secure a little political capital.
The current system is designed (to be able to) rob any candidate who builds popular support over the establishment. For instance, superdelegates are bullshit, but they're the tool the DNC decided on to prevent another Carter from happening, which is how they viewed Sanders.
Biden didn't even campaign and ended up POTUS, and he hasn't done anything towards enacting any of the promises he gave lip service to during the debates. I just wonder if that's not backfiring, what is?