Well, you are back to objecting to the distinction between soccer and football, which I do still stand by, and which you've been presented the not quite mountain but most definitely a hill without rebutting evidence on your part. I stand by the position that soccer (or for that matter QB) is a more skilled based than football positions, at least linesman. We just disagree with that. I get getting hurt over the omission of the "er" and making it an objective measure. But on the relative, you just don't have a leg to stand on and have advanced nothing that disputes that beyond "I believe". The one argument you've made is that linemen are highly paid, but that doesn't follow a priori that they are skilled either (particularly since you dispute hours as a representation of skill)...just because an actor or a singer is highly paid doesn't make them skilled either.It's really not that deep. You stated, with words, that most positions of football were low-skill. This remains an untrue statement that someone can either roll their eyes at or decide to call out. It takes no stretch to take that to mean that soccer is a high-skill sport, but football (for most positions) was low-skill.
Of course that was inflammatory, of course it was uninformed, and of course there might be some dumbass (i.e. me) who will call you out for it. The fact that someone can walk on to a high school team, or even a college team, for some positions if everything else was a fit - doesn't mean that the position that they turn out to be quite good at (hopefully) - doesn't require much skill. It just means that they inherently have the skill to perform well from the start, including the athleticism, body type, smarts, etc.
Reasonable people can disagree about how relevant or necessary the amount of hours put in to learning a certain position relates to how well one can perform in that position - but I don't see how they can disagree that the ultimate measure has nothing to do with hours, it's simply their performance on the field.
The reason your "ultimate measure" doesn't work is because there is no rubric to compare a violin player to a drummer, a chess player to a checkers player, a soccer player to a football linesman besides money (which I've pointed out to you is another fallacy) and time, at least when comparing the difficulty of one discipline to another. Hence the necessity for a razor which, while the correlation is not 1 to 1, is high. The more you do something the better you get at it, which means mastery is simply a function of the difficulty of the endeavor from a skills perspective, the preordained innate level of elements required (which as I've said is higher in football than soccer), and the time put it (hence the high but not perfect correlation between time and mastery). That's just an economics analysis.