If they apply the policy in the way they say they are going to then it is a good thing IMO. There are several posts every day from buyers who have relied on a seller saying an item has a warrenty but when they try to claim on it the seller ignores them or says tough luck, the new policy is meant to make them live up to the terms of any warrenty up to 180 days.  It will also stop the sellers who use shady tactics to get buyers to wait until over the 45 day limit with tales of postal delays etc.

I am sure that if Paypal try and issue refunds for items like clothing after nearly six months they will find themselves on the pointy end of a report to the financial ombudsman.