The issue people are having is not that the rules/clarifications are a huge issue in and of themselves. If we were to take everything they've said at face value, most bits of this I would not have an issue with (although I still think the idea that you can be smacked for telling the truth about an alt as part of scam is dumb).
The problem is that EVE's GMs have a well-earned reputation for playing fast and loose with the rules when it comes to answering certain kinds of petitions. Peoples' concern is that okay, this is supposed to be just for people impersonating other specific people - but the language is so vague and unclear that a GM could now point to these rules when issuing a ruling that is out-of-line with their stated intent. And the only thing more difficult in getting an initial favorable response from a GM is getting a GM to admit they were wrong.
I'll say this: Having spoken to an EVE GM before, I appreciate the shit they get when they deal with 500,000 angry spaceship nerds on a daily basis. I understand why they want to have quotable rules - so that if a GM has to make a (legitimate) decision regarding impersonation, they can point to something and head off the cycle of appeals based on whether the GM was wrong or not. Unfortunately, EVE's GMs also have a reputation for doing some highly illogical things, and people are not going to forget that.