E.g., comparing a small quantity of pickups and when they sound very similar stating that all pickups of that type (humbuckers) must sound similar, without addressing whether the pickups he compared form a good representative sample set or why the ones he compared sounded similar (e.g., how similar are their electrical specs?). Most of the time now I just watch specifically the sections of videos where he compares things, and then draw my own conclusions. Sometimes he doesn't provide enough info on his setup though (e.g., how he tuned two amps he's comparing) so it devalues the comparison.