It's reasonable to be critical of particular, usually pragmatic or political, decisions and recommendations that the WHO or CDC makes, such as whether masks should be worn. They said they wouldn't help--that makes no sense because your getting closer to people because of complacency with the mask wouldn't be as significant as the value of the mask. And the shortage of masks wouldn't be a great reason for the decision if workable, good enough masks were used, such as the bandannas and whatnot that people are using now.
In general, though, if you had paid attention to the mathematics and medical facts of epidemiology and pandemic transmission, you'd have done massively better than Trump.
Even as there has been a decline in the percentage increase of cases per day in the U.S., that does not entail that there has been a commensurate decline in the actual increase in those with Coronavirus, because of the small amount of testing relative to the population, well under 10,000 per million of population. And the death toll is underestimating the # dead at that time because of coronavirus, again because of the lack of testing and political decisions in some places. But the death toll will be steep for much of the month, and who knows exactly how many New Yorks, on a smaller scale, there will be in places with limited social distancing and fairly high population density? We're passing the H1N1 death toll today from an entire 2019-20 season, and large numbers of deaths attributed to flu or pneumonia earlier in the season might well be due in fact to Coronavirus.