I'm not sure it's new guy syndrome - he's got two legal cases on the go with, apparently, very little to back it up:

Goziker worked at TikTok for only six months. He didn’t hold a senior position inside the company. His lawsuit, and a second one he filed in March against several US government agencies, makes a number of improbable claims. He asserts that he was put under 24-hour surveillance by TikTok and the FBI while working remotely in Mexico. He claims that US attorney general Merrick Garland, director of national intelligence Avril Haines, and other top officials “wickedly instigated” his firing. And he states that the FBI helped the CIA share his private information with foreign governments. The suits do not appear to include evidence for any of these claims.

No at a minimum that has to make people wonder if he's an unbiased source at a minimum and it should make lawmakers at least stop to consider how reliable a witness he is.