Things like this always speak to weak parties and organizations. The candidates should be subordinate to their orgs, not the other way around. Even if a leader is particularly skilled, you are creating far too large of a liability when they inevitably fall out of power, at minimum because they will eventually die.
Kruschev was similarly an indicator of a party that could not reproduce competency and did actually overly depend on a team captain to not begin falling apart.
This is probably the most important aspect of protecting a revolution and it really seems like something that needs to be baked into the party/org before the revolution even happens. Where are the thousands of people ready to replace both Evo and Arce? Why are they not better-organized than these two factions? I'm sure the answer is in the details, but those are the details we have to care about.
lmao