Bush proved that you can get a prestigious degree just by being well connected, so who really cares?
Lol he got a Harvard MBA. They don't just hand those things house because you have an important last name. It could also be that an MBA is completely irrelevant to political leadership. Contemporary models of management offer no understanding of human nature other than the boss-subordinate model in which the boss has all the power and the subordinate has only the right to resign. We have largely elected attorneys, whose training as a rule is very generalist. Attorneys must understand human nature in ways that scientists, engineers, surgeons, and accountants don't even if such people are just as intelligent as attorneys on the whole. Even military men know the limitations of managerial power.
Dubya may be the last MBA grad that we have for President for a very long time. We are more likely to elect a Professor of German Literature as President than an MBA.
The last non-college President was Harry Truman. But as an exception he explains the rule. He was much more erudite than the average. He never quit learning. As the one who had read every book in the local library around 1900 he is the sort of person who would get offers too good to refuse from first-rate universities, and he would do well. he would probably go to law school and finish very high in the standings. A solid high-school education was a rarity a century ago (a high-school education became the norm in America only during the Great Depression), let alone college.
Scott Walker is not Harry Truman. Of course a bachelor's degree no longer means what it used to. (But know well: many of the people with college degrees a century ago were clergy who got inexpensive education of little value in any other career). The bulk of college degrees a century ago were still heavily from Ivy League with a smattering of degrees from land-grant colleges that had not bloated into the educational behemoths that they now are (like the Universities of California, Florida, Michigan, and Texas). Real intellectual curiosity has not expanded as much as the university system has expanded.
Scott Walker is one of those kiss-up, kick-down leaders who might get something done but does so at great cost to any good will. He has shown much resentment of degreed professionals who fail to 'know their places' in a New Order in which most people suffer for the greed of commercial elites who see their own indulgence and personal power as the sole measure of social virtue. He can appeal to people who resent having had their grammar corrected in the presence of other students -- the GOP is very good at exploiting resentment by the working poor toward the American intelligentsia. But what can that achieve?
Scott Walker could be the Knight in Shining Armor for those powerful people who believe that their greed and economic cruelty aren't appreciated adequately for their efficacy. He might also offend those middle-class types who know that those economic elites have no use for them.