Thus why I'm pretty sure all of those plans have mentioned using checkups to spot inappropriate lifestyles in such folk. If they're not funded enough for getting TVs and Escalades and they've got TVs and Escalades red flag goes up and you pass it off to law enforcement to figure out if something wrong is going on.
Frankly, the same reasoning that we should be doing (and do to a degree - you have to OK them to do house checkups if they deem fit) with welfare, except since welfare overlaps with working income right now it's basically impossible to monitor fraud.