His influence on trump was limited by Musk. Bannon was pissed all his hard work of puppeteering trump was then being co-opted by a rich immigrant that did zero of the work to tie the string to trump. Seeing this fracture in the Musk/trump bromance, Bannon is seizing the opportunity to stick the knife in Musk and twist it politically.

Bannon wants to reclaim his “rightful” spot as the sole trump puppeteer.