It's not overblown. When you've been busted once for an offense, and repeat it later, the action taken against you should be harsher, despite the second offense arguably being less severe.
If you were convicted of an assault on someone and sent them to the hospital for a month and they were eating out of a tube, you'd get punished. Let's say a few years later you beat another guy up, but this time you just broke his nose and scraped him up. The second assault is less physically damaging, but legally it's a huge fuck-up. You did your time for your first offense but apparently did not learn your lesson. You shouldn't get the same type of slap on the wrist that a first-time offender would get for breaking a guy's nose; instead your past crimes which were equal in character but inequal in severity should be factored into your sentence.
I get what you are saying, but I'm not sure the law analogy is the same thing, because these things are not set in stone.
Firstly, we are in agreement that his past mistakes overshadows this one. Where we don't agree, and where it becomes kind of subjective, is did he break any rule at all this time? And if he did, was it an infraction big enough to warrent being banned, even with the past in mind?
I've explained how I see it. The one second, him looking at the ground(look at the youtube clip), letting go when he looks up and sees the ref, no crank(the ref's weight pushed them over) and no injuries. This is what I see and that is not enough.
I do agree that he has messed up a lot, and I don't have any personal attachment to him as a fan, it is just how I see this matter.
Also, I find the hypocrisy glaring. Rarely, if ever, have we seen a reaction like this. Which is not in proportion to the damage, or lack off, done in this fight. Other people have been hailed for much worse. Not saying two wrongs make a right, but it's something to consider.