It is very easy to find other sources making the same claim, such as this one which includes an image of allegedly posted json including passwords.
Nice timing. I don’t see how warning you that your email passwords will be kept remotely by Microsoft would be “redundant.” Many people will assume from that message that it would only send them all your mail, and the even more carelessly optimistic among us might guess that it would be end-to-end encrypted as it obviously should be.
It is end to end encrypted as the data is sent through a tls tunnel. And well, they could spell it out sure. But if that was the only thing the article was complaining about then there wouldn’t be many clicks ;)