This bunch of 4 million looks to have “scammed” about $4,000 each. Not chump change, but not huge fraud/waste over a ten year period.
No, but I’d also guess that there are a lot of people on SSDI who are technically eligible for it because they paid lawyers to build a case for them. Daytime TV is full of these lawyers shilling for new SSDI clients - they’ll even get you the doctor.