I have noticed that some, at least two, games that are labelled as "achievement spam" and their TrueSteamAchievements score is set to zero. The games I have specifically looked at are
Achievement Smiles (
Achievement Smiles Achievements)
Achievement Lurker: Dad Jokes (
Achievement Lurker: Dad Jokes Achievements)
However, some users get 200 points for these games and some get zero.