It was less risk because there were fewer people wanting it. DAS -- while intangible -- is a limited commodity due to it's impact on the standby and evening FP/LL queues. When demand for it increases there's not enough available to give to everyone who wants/needs it without negatively affecting others. Disabilities have "exploded" (for lack of a better word) over the past decade, whether that is due to more diagnoses or better testing to make those diagnoses or simply more acceptance of disabilities or an aging population or likely all of these combined.
As I pointed out...in 2011 I was far from confident that my child would qualify for accommodations (GAC at that time). We made our trip plans, had plans A-B-C considered if needed for any given day. We had to actually be onsite to obtain any accommodation -- and again, I was not feeling confident due to lack of information available. In fact, we didn't obtain the GAC until late in our second day because it was denied at first request (until I arrived at Guest Relations in a frazzled state and my child was in meltdown). The Internet has shared so much about DAS and made it "easy" in the past decade that many felt they were entitled to accommodations long before they left home with no alternative plans in mind to accommodate their own needs. People assumed there was no risk but that doesn't mean there was no risk.