They might be defended by their agency (though being "in the right" doesn't appear to be a pre-requisite for that anyway). But they would/could still be subject to lawsuit after lawsuit, which hardly suits the intended goal of government, does it?
Poor people already cannot afford most legal services, and (other than a very small percentage of cases brought on a volunteer or nearly-volunteer basis at the goodwill of law firms) very rarely file suit without legal fees sought in restitution. Of those that don’t, it’s understood that recouping legal fees from lower income clients is far from guaranteed due to bankruptcy risk.