Getting banned by Myers isn't exactly difficult, though. The man is extremely prone to righteous anger.

Not as much as one would expect. There's a very long list of people who have been banned but PZ's blog is one of the most popular blogs and covers controversial topics. I haven't seen much evidence that it is easy to get banned by PZ. In the case of Caledonian he got banned from Pharyngula for being generally tone-deaf and engaging in what amounted to trolling but it probably would not have been sufficient to get banned by many bloggers. Note that as Annoyance he never got banned here, and he in fact has positive karma.