To me, it seems a restricted variant on the specific cases "if" and "while" would be good enough, without generalizing to more cases.
The exemples of assignment with "all()" and "any()" make me sad. Python had only one way of doing things, now it has two.
Reading Python code will be more complicated now than it was 10 years ago for newcomers
Edit : I'm sick of all the downvotes on HN. Everytime we post an opinion against the consensus, it ruins the karma, even if the comment is honest. And of course, I can't downvote people, since people keep downvoting me, I never reach the threshold to vote against any comment. The system is unfair to newcomers.