Why? Because of course, that's why.
From Newsweek:
Newsweek sent the following Tweets to Twitter for review:
Twitter replied to Newsweek:
"The Tweets referenced are not in violation of the Twitter Rules," the spokesperson told Newsweek in an email. "We will not take action on every instance of misinformation. Currently, our misinformation rules cover COVID-19 misinformation, synthetic and manipulated media and civic integrity."