I would bet the dumb SOB has never heard of the Voyagers either.
Matter of fact, he would have concluded that they could have never came up the Great Lakes because there was no water in the puddle at the time.
There was a pioneer group that traveled up the waterways just prior to the voyagers. I cant remember the correct name for them. Them and the voyagers were kicked out by the trapping companies and hence, the French names from the lower Lake Huron all through the UP, WI and down the river systems to the Gulf in LA.
Just look at a map at the place names.
These self absorbed history “experts” need a slap right smack cross the chops for making ignorant remarks.
I absolutely do believe there was a route to the gulf of Mexico also.along these rivers was where tons of copper pieces were found made of Great Lakes copper.