You've been wrong on every one of them...whenever you summon the courage, engage with me and I'll point out why on each of those items.
As for the CDC...and Dr. Fauci, who you somehow overlooked...they've been dealing with a "Novel" Coronavirus since Day 1...and one that has mutated significantly over the last two years...such changes and acquired knowledge begets changes in guidelines...you'd think someone with your background would instinctively get that...but, alas, no such luck.
Thank heaven you aren't in a position of responsibility in the CDC.