According to u.today, Elon Musk has finally acknowledged Dogecoin co-founder Jackson Palmer in a recent tweet, claiming that the latter tends to be “a bit negative” at times. “Achievement unlocked,” Palmer wrote in response to Musk’s remark. Jackson Palmer, who co-founded Dogecoin together with American software engineer Billy Markus as a joke in 2013, left the cryptocurrency community in 2015, decrying its “toxic” culture. Palmer was particularly critical of anarcho-libertarian beliefs espoused by crypto proponents. Jackson Palmer slammed Musk, the most powerful promoter of Dogecoin, as a “self-absorbed grifter” in a now-deleted tweet. In sharp contrast to Markus’s sycophantic devotion to Musk, Palmer remains highly critical of the Tesla CEO. Last month, he harshly criticized the abrasive centibillionaire for launching a hostile takeover of Twitter. Palmer recently said that Musk tweets about crypto to expand his cult of personality and boost his ego.