Ventajas
The people working the campaigns (ie. entry-level, interns, canvassers, etc.) are genuinely good people with good intentions. The campaigns help raise awareness and money for important issues – although the network often falls into the trap of performative politics rather than focusing on fundamental issues.
Desventajas
Upper management operates on a model of abuse where lower-level employees are overworked at poverty wages. They justify this by saying they "pay little to make donations go as far as possible" but it's very clear that higher-level employees are doing just fine while entry-level employees are struggling to get by. The whole culture is weirdly trying to act like a socialist nonprofit (ie. making employees staying at each others' houses rather than booking hotels, saying the benefits are spread to increase their value, social justice messaging, etc.) while truly operating as a top-down capitalist corporation. It's also pretty clear that Doug Phelps is using Fund for the Public Interest as part-pocketfund, part financial catalyst for his aspirations to run for office.