The down side of sitting through coverage of the basketball tournament and the presidential debates and the Chicago first responders trilogy and Vikings is sampling the commercials.
It's true that H. L. Mencken, long ago, japed, "Nobody ever went broke underestimating the intelligence of the American public." It's also true that advertisements enabling the crude vulgar culture and that the tendency of advertisers to portray men as bumbling (or not) is contested enough territory to have a weblog dedicated just to that phenomenon.
Perhaps, though, those advertisements simply appeal to the level of competence the writers perceive in the public. What happens when uneducated American young people go through college and enter the workforce? It's not pretty. "That a growing percentage of U.S. workers are incompetent is consistent with declining labor force participation compared to other countries" (Source.) Consistent with, but perhaps not a complete explanation. "Over the long term, fewer prime-age people in the workforce could bring down the country’s growth potential and make it difficult for the economy to support the coming explosion in baby boomer retirees." If the participants are less productive because less capable, that difficulty gets worse.