Believe whatever you need to. But consider this:
People are fundamentally selfish. Building a system that assumes general altruistic behavior is not going to work very well. Assuming people will not take advantage of rules for their personal benefit is naive.
Consider politicians. Have you ever noticed that people tend to go into Congress as middle class people and come out wealthy? How do you think that happens? Altruism?
How many people offered student loan forgiveness will say "no thanks, I borrowed the money, I'll pay it back!"?
The people I mentioned were not breaking the law. But they were taking advantage of it.
If you're one of the few people in the world doing well enough to be paying into a system rather than relying on one, thank your lucky stars for how blessed you are. Ultimately, nobody on their deathbed contemplating their life cares about who their taxes were spent on.
If you simply must be mad at someone getting government handouts without need, there's a big list of companies who use accounting tricks to pay no taxes and even get subsidies from the government. You're probably better off being mad at them than some guy who's figured out how to go fishing while collecting unemployment.
I remember when the unit at the company I worked for decided to put a big graph of the bug count on the wall, and announced incentives for retiring bug reports. Within a week, the entire unit had devolved into knock-down drag out fights over who had solved a bug, if a bug was really a bug, if a bug was actually 3 bugs and the person should get 3 credits for solving it, people filing fake bug reports and then "fixing" them, etc. A couple more weeks of that and the graph was taken down and the incentive program terminated. These were intelligent, well-educated people, going berserk.
There was another case where the company got a big contract from IBM, and hired some mercenary contractors to fulfill it. Part of the deal was each mercenary got a $10,000 bonus (worth about $30,000 today) for getting it done on time. I'm sure you know what happened. It shipped the day before the deadline.
I asked one of them, "did the bonus get you to finish on time?" The response, "absolutely not, it had nothing to do with it. We're professionals!"
If you'd like to sanity-check your recollections, try to figure out what the people in question would be eligible for, and try to figure out what it would actually cost to live in Seattle.