Playing devil's advocate, that's like saying that if you win a silver medal in the olympics behind someone who was later found to have taken drugs you just should have run faster. We did break the rules and we should own it, if the roles were reversed I'd be fuming to be honest so I don't really understand the whole 'they've got nothing to moan about' line.
Again though, that doesn't mean I disagree that the initial ruling (and the revised one) was overly harsh or that we should keep having to prostrate ourselves for eternity because of what happened. At the end of the day I wouldn't expect us to sign a player for £19.5m and for them to individually improve our performance by 6 points so I don't think the deduction was proportionate, but I do get why a team who followed the rules would be annoyed that they lost out to a team who didn't.