These are exactly the points I've been trying to articulate over the past few weeks. The liberal press has been furiously attempting to paint Trump as a charlatan rather than reporting the truth. To this end, they have focused on manufactured drama about racism ("don't you dare call it the Chinese virus!"), HCQ ("It isn't a miracle cure!") state's rights ("the president isn't a king!") and the WHO ("defunding the WHO is a crime against humanity!"). Their contradictory efforts to hold Trump fully responsible for the govt's response while at the same time insisting that he had no authority over individual states is a testament to their deceitfulness. Will people see through it come November? I don't know.
The facts are that disagreements about the science, concerns about the economy, the US's decentralized structure, a general lack of preparedness (by comparison to places like SK) and geographic and demographic factors (climate, population age etc.) are far more relevant factors than the WH's response. It is for this reason that the the US would likely have experienced similar results irrespective of who occupied the presidency.