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I still think the GOAT argument is super pointless but it would be something really special to see him win a title at Ferrari.One thing is for sure, if (unlikely..but if) Lewis wins another title in the Ferrari, his already legendy status will go nuclear. There could be no arguments over the "GOAT" then.
One of the most overlooked items with the whole GOAT debate is that there was a sizeable period of time where you were more likely to die during a GP than you were to win a world championship - and Fangio won 5 world championships. Jackie Stewart won 3! That whole era was just something else.