Does it give Karius some justification in his performance, or is it just another excuse for us to complain about. For me the game has gone, I want to forget it even happened and try to erase it from my memory.
We are coming across as very poor losers, Ramos is shithouse and fingers crossed someone will stick one on him during the World Cup, but some people are trying to claim Karius made those mistakes because he was suffering with concussion. Maybe it was a factor, maybe it wasn't, but now people are turning on a Sky Sports presenter for laughing when mentioning the concussion.
It just seems we are looking for an excuse for getting beat, it doesn't sit well. Just look forward not backwards.
I feel desperately sorry for Karius, he's obviously a talented keeper but I fear he will never get over this no matter how much he tries. You think back to Seaman getting caught out by the Ronaldhino free-kick, an amazing keeper with a stellar career but people will always remember that goal.
Next season the defence wont trust him, opposition players will deliberately target him, the fans will turn on him big time at the slightest mistake.
The best thing he can do is rebuild his career back in Germany and we get a proven keeper.
If by "some people" you mean "a leading expert on traumatic brain injuries, concussion, and other neurological disorders having authored more than 300 peer-reviewed journal articles, abstracts and book chapters on these subjects and has cared for athletes of all ages for more than 20 years" then yes. "Some people" are making this claim. The very people who are qualified to make that claim rendering whatever anybody whose knowledge and experience on the subject matter is effectively nil has to say utterly redundant.
Opinions are not of equal value. Just as the most popular opinion isn't necessarily the right one. In this instance, there is the qualified & educated opinion. Then there is the noisy rhetoric. It's basically the flat earth debate - science vs ignorance. You cannot present both sides of this as if they are equally plausible because they aren't. One is an opinion supported by medical tests performed by the leading person in carrying out such tests in the world to determine the thing that is being discussed. The other is unsubstantiated nonsense. Uninformed dribble. It's bollocks, basically.
Maybe the earth is flat, maybe it's round - These opinions are not of equal value either.
Then you have slipped into the other accepted wisdom - that the only solution to Ramos' shithousery is for someone to "stick one on him" during the world cup. Because the only thing violent arseholes understand is violence, right? But then if we are praying for more violence, are we on the violent arsehole side of that argument ourselves? And if we are, is it possible we can take a step back and ask if there is a possible solution to these problems where more violence isn't the solution?
One idea, for example, would be to have rules that specifically outlaw such violence. Then punish those who ignore those rules somehow. Maybe even go a step further and appoint neutral person(s) to be on the field to responsibly implement these rules. Then perhaps have some sort of oversight on the field, someone monitoring the performance of that person while also making him aware of anything that he may have missed. Stuff like that might work better than going back to an old testament eye for an eye system of resolving problems. As Martin Luther King said, "The old law of an eye for an eye leaves everyone blind."
As for everything else you said. It's just more opinion dressed up as fact. And as we have already discussed above, those opinions are based on bollocks.
