@Ellen908 If both parties have reviewed each other, you can click on one reviewer's profile to search for the reciprocal review by date. But that can be time-consuming when you're scrolling through a host profile with thousands of reviews. There's a plug-in called AirReview that skips this step in theory, but it's actually an extremely buggy piece of software that causes other apps to misbehave, so I really can't recommend it.
I agree that checking the reviews a guest has left for other hosts is as important as seeing the reviews hosts have left for them. It would be nice to have a built-in feature that makes this easier. But I don't think Airbnb has any incentive to develop a feature that would result in hosts declining or cancelling more bookings. Even when they appear to be promoting "inclusivity," they're really more interested in pressuring hosts to take all comers for fear of discrimination claims.