While that is interesting, you realize before the 4 years you mentioned, Trump did everything he’s in trouble for doing. He also established the supreme court we have. If Biden randomly died his first 5 months, we still would be in a similar (if not the same) situation. Every person who made this happen, would still have their previously established power. Training someone new would not have stopped this inevitability.
Just curious, why do you think Biden has to do anything? There’s teams of people in charge of enforcing laws that don’t need the president to tell them what to do. A CEO doesn’t tell everyone under him what to do. He just expects them to do their job to the best they’re able.