Chouji is not week... He uses those food pills, like Kabuto uses his soldier pills, like Orochimaru uses his tongue and snakes and sword, like Kiba with akamaru, like naruto with kyuubi, like sasuke and itachi and kakashi with sharingan, like tsunade with katsuyo, like jiraiya with those frogs, like neji and hinata use bayakugan, like shino and his bugs, tenten and weapons, temari and fan, gaara and sand, akastsuki ino-like with that freaking bird jutsu, the four sound with the level 2 curse... and so on >_<... They all cheat, and they're not weak...

people he uses something to his advantage... saying for him not to use the pills because he cheated is the same way telling naruto not use kyuubi, tell sasuke not use sharingan, tell jiraiya to not use his frogs (O.o) and so on...