You are citing a possible source of bias for three specific individuals.
That does not speak to whether the bias is present in their organization as a whole to the same degree as other publications you might more readily consider biased.
Hmm, I could have explained why that is problematic. The article here does it better than I can. On its own, a former CIA official working a different job is not unusual, that is agreed — on its own and not part of a pattern. https://thegrayzone.com/2021/08/04/twitter-uk-cia-reuters-ce...
That does not speak to whether the bias is present in their organization as a whole to the same degree as other publications you might more readily consider biased.