He most certainly did not. High carb fuelling (>100g/hr) has been around for a very long time. What he (and many other high profile athletes) did was use his platform to distort and exaggerate the science behind high carb intake during exercise to make money for himself and for his sponsor. Lying to the community he claims to love in order to line his own pockets is sociopathic behaviour and not something we ought to be applauding. He's done the same thing for many other supplements and gadgets. Roche and his fellow influencers are the least reliable source of unbiased scientific information on the internet.
If he had an honest bone in him what he would have said is that elite athletes tolerate high carb intake not because carbs are magic, but because their metabolic systems are highly developed. Copying their intake without having the same capacity is not advanced: it is premature and often unhealthy. High intra-workout fueling has its place, but only if you earn it first by building real work capacity. This is where “science-based” advice fails and becomes pseudoscience: it ignores readiness. High intake is not a goal. It is a consequence of mitochondrial capacity. Without that capacity, more fuel does not mean more performance: it means stress.
Moreover, what the research has found is that very high intakes do not improve performance. Even if you are able to digest, absorb and oxidise 120g/hr, all that happens is the muscles respond by oxidising less fat and more carbs. There is no glycogen sparing (and in fact, some studies have found that very high carb intakes may increase muscle glycogen depletion). So it's a pointless exercise. You're robbing Peter to pay Paul!
In ultra running - and it's mostly ultra runners who pay attention to Roche - exercise intensity is so low that you're using fat preferentially. So why risk gastro problems in an ultra by forcing down large volumes of carbs when there is literally no need to do so?