There are three sets with three DVDs each, two of which are the cartoon shorts and one of which is a selection of videos and extras. If we ignore the two episodes from liquid television, and even if we ignore the 5 episode "first season," doesn't get us halfway through the stuff he released. The first one past the two year mark (starting from the beginning of season 2 https://en.wikipedia.org/wiki/List_of_Beavis_and_Butt-Head_episodes) gets us up through episode 12 of disc 1 of the second set. Each disc has 20 episodes except for the second one of the third set.
Sorry if that response was overly pedantic. But regardless he did not seem to hold that opinion when he made those DVD sets.