Same reason Trump was on it during his presidency iirc. Quoting them:
TIME has a long history of featuring presidents on the cover and Trump, whose presidency defied precedents and fractured norms, has been no exception. Eight of the top 10 people to appear most often on TIME’s cover are U.S. presidents.
Nixon, Reagan, and Bill Clinton have all been on more than Trump.
So, we can ban crosses? I'm obviously going a bit far, but both somewhat touch on the way people believe rights should be secured, and both involve human rights (one to free expression of religion, another to life and fr33dom from unfair treatment in general). Both make statements to others that others may find uncomfortable, depending on their beliefs.