What a shame there are so many liberals in your family - on your wife’s side. Sounds like they are gaming the system, however, some do receive benefits if they have mental illness. Their records are confidential, so there may be issues you aren’t aware of - other than what you see and hear. Of course, some can probably fake it too - I’m not saying that isn’t a possibility - because it is.
Oh well, the system is broken - what do we do?
Fix it.