Update: Seeing some approvals on Southwest Personal & United Explorer cards as well.
Currently there are some datapoints of people being successfully approved for the Chase Amazon credit card despite being over 5/24. That card is currently offering an increased sign up bonus of $200. Earlier this year Chase increased credit limits on existing cardholders Amazon cards by a lot.
Amazon has been considering replacing Chase as a co-branded partner so Chase removing the 5/24 rule could be due to either trying to keep them as a partner or pad the stats if another issuer plans to purchase the backbook from Chase.
If you do apply, share your 5/24 stats and application status in the comments below.