Im honest, if i see someone hide his Logs (Ofc only in Savage/Extreme, everything else i dont care) i will kick him without 1 second of a thought, its not about being a bad or good player and i dont even care if he is orange or grey, the only thing which matters for me is the amount of reclears he has. So like previous people said, if someone uses fflogs to harass you just report him and move on