If Bolton was talented and meaningful in his anti-anything Trump he would have a paid position within the Biden/Obama administration. The fact that he does not tends to reinforce his status as a partisan hack without meaningful advice for the modern World geopolitical stage. Seeking and being invited to Left wing media outlet news shows to bash his former boss is not meaningfully contributing to the world.
In other words, the man is a useful idiot for the left and the MSM as many other establishment CONservatives are!