As a host, and as a guest, I completely agree with all the complaints posted here.
The "response" from Airbnb, that Lizzie shared with us previously, says that Airbnb's analysis shows there are more bookings under the country/language regime. But if hosts (and guests) are saying "this is nuts" then clearly Airbnb is prioritizing their own financial bottom line rather than people's satisfaction with usefulness of the site. Not surprising, but definitely frustrating for us as users.
If Airbnb refuses to switch back to chrono order, then YES, I agree that a good compromise is to add a date-search option for reviews. That way everyone will at least have a means to check reviews by chrono order if they want to.
This goes for reviews of guests as well. I was just checking a guest's reviews and she was from the U.S. but her first review was by a host in Norway, even though it was not her most recent review. So it appears that the rule for listing reviews of guests is different from the rule for listing reviews of hosts. Which adds to the confusion and aggravation.