Actually, I said aside from the rate/term refis that appraisals were ordered the vast majority of the time.
Yes, the number of waivers has greatly increased, and that is primarily because the grate majority (like over 75%) of loans made recently have been for refis. For purchase loans the percentage of waivers is still very low. Because of crazy market conditions, some buyers are waiving the appraisal as a contingency in the purchase contract, but that has nothing to do with GSE policies.
Oh, and by the way, the actual number of appraisals being processed is still at record levels. Nationally, appraisers have more work than they can do, but some seem fixated still on the appraisals they are not getting.