Oddly enough I actually agree with this. If I was banned I wouldn't kick up a huge fuss fighting it (even if it really was unfair) because in those cases people tend to react against you even more and you'll never hear the end of it. Best to just drop it and move on.
That depends how you go about appealing. If you post hundreds on {{unblock}} tags to your usertalk page, and email wikien-l hundreds of times, yeah, people are going to react against you. If you send a calm email to an arbitrator explaining your case, they will open an arbcom case for you and you'll get your fair hearing (you will probably even be unblocked so you can participate directly - just don't abuse it, whatever you do).
(Note: That's the way to deal with bans, not blocks - if you're just blocked, arbcom is probably overkill.)