Also, it's about the virus weaponization research itself - in cooperation with an adversary nation, no less -, Fauci's 40 year long "career" and his being a de facto unaccountable sole ruler of his own private domain inside the State-Corporare apparatus, all the bad incentives...

None of this was put in place by Trump, it takes a lot longer and a lot more than the four years he was in office fending off a constant barrage of attacks and sabotage actions from the inside.