FOIA request compliance can have huge impacts on agencies above the "cost". Since most government agencies have cut staffing to levels that make it impossible to comply with the statutes and congressional direction already on the books. There is no clerical staff left to do filing. Professional staff has to find time to do the filing, and would be tasked with responding. If the goal is to cripple the agencies to the point they can not function, this is a good way to do it.