I don't think that's an entirely unreasonable observation. If you can find a list of the most-watched half-hour sitcom episodes of all time, you'll find it is dominated by episodes of TBH. "The Giant Jackrabbit" (1/8/64) was the most-watched prime time telecast of any kind up to that time (a record broken a few weeks later when the Beatles appeared on The Ed Sullivan Show), and remains the most-watched half-hour sitcom episode, as is noted in its episode guide. With the proliferation of cable and satellite channels, that's a record that will likely never be broken.
TBH may not have been the most sophisticated of TV sitcoms (to my mind, that distinction belongs to The Dick Van Dyke Show, forget that silly Seinfeld), but it may have been the most popular, if ratings are any indication. Any comments?