Interesting - he claims that Jen Stuart’s rode around the Union army leaves Lee ‘blind’
But now he is admitting the Stuart only took 3 of the 7 units that he commanded. Lee had 4 units of Cavalry at his disposal !
Lol
What I took from the video was that there is a general belief that Stuart left Lee without sufficient cavalry right before Gettysburg; but, as you point out, he didn't. Lee should have had plenty of cavalry to cover his needs, but, because of a combination of factors - primarily the sub-commanders inability to work together - Lee was effectively blind.