"However, the bigger goal here has to be the fight against corruption in our sport. The anti-corruption officers have few tools in this fight and their most important tool is information from players.
"So by not giving people credit for coming forward and providing information, you are effectively putting up a significant barrier for anyone coming forward in the future."
The International Cricket Council is on record as having said Vincent provided significant assistance to the investigation, but this did not cut any ice with the ECB, who claimed jurisdiction over the case as some of Vincent's fixing occurred while playing for Lancashire and Sussex in county cricket's limited overs competitions.
"I can only assume the people making these decisions are not motivated to have players coming forward in the future," Mills said.
Watch: Lou Vincent: 'I am a cheat'