Earlier quoted context omitted.
You misssed the fact that he took it to ANI and was shut down there too very quickly. Frustrated with the fact that no attempt was made to deal with the matter, he, quite sensibly, concludes that it appears they are trying to protect Cross. I should also add that the people targeted by Cross all have a fairly large audiences on Twitter, and have been vocal about this issue. Jimmy Wales is aware (he's tweeted to them,…
Who is "they" and why is it sensible that they're "protecting" some random WP admin? What seems more likely to me is that people have very legitimate concerns about Cross's POV, but aren't following WP norms in raising those concerns, and are getting shut down as a result. That's an expected outcome, not a sign of something nefarious happening.
(Unless "don't criticise a top-1000 user" counts as a Wikipedia norm, I suppose.)
I disbelieve that that the admin in question is both a neutral arbiter and capable of determining within two minutes that Cross is not an "avowed rival" of Galloway (see WP:BLPCOI), particularly given the "And being attacked by RT and George Galloway is a reasonably reliable indicator that you are doing something right" bit on his talk page.
[The relevant part of BLPCOI is:
« Therefore, an editor who is involved in a significant controversy or dispute with another individual—whether on- or off-wiki—or who is an avowed rival of that individual, should not edit that person's biography or other material about that person » ]