I pointed Jon Matonis to this thread and asked for comment, as he is a founding member of the Bitcoin Foundation
Here's what he said:
Satoshi was added as a courtesy It would have been more arrogant to exclude Satoshi as his designated heir to development was also a founding member. If requested to, I'm sure it wouldn't be a problem to remove.
I don't think there's anything to get upset about here, just a symbolic move. Keep in mind The Bitcoin Foundation has no formal standing, it's just a joint effort by early pillars within the community to centralize some of the attention to better address it, and to help target development. They have no real power besides who their members are and what they voluntarily do (except Gavin, who is paid to develop)