I don't think this node warrants downvotes just because it mentions XP, upvoting, and downvoting. For me, this node talks about generic thing, not specifically about XP system. It's discussing a premise from a book, about how people generally think towards something they face. That people tend to think negatively faster than think positively. It's not by coincidence, IMO, that "think positively" or "positive thinking" or "think the positive side" are adviced again and again. It just happens that he takes XP system, specially downvoting, as the case of his premises.

I personally agree about what Moron talks about. I just see it right away in the replies to the OP. And to my experience, it takes more time so I can think positvely about something. I also learn hard to force myself not to react quickly, because if I did so, many chances that I would react negatively.

Of course, people reading the node are free to react for whatever they feel at the moment they read the node, either fully or just by skim reading. Afterall, the title suggests just the opposite of that "negative quick, positive slow" symptomwhat de Bono presents. Whether people are going to apply it on the XP system here or in their real life, it's again a matter of personal choice. I do agree, however, that discussing XP system is, most of the time, near to useless. I've seen such nodes gained many negative reps. This one, I believe, doesn't talk about XP system as the core content.

Update: I never read de Bono's book as referred, I don't know exactly what it talks about.