Painfully Uneven, Irritating to Watch Today...
Aparently there were enough naive boobs watching teevee then (as ever) who were taken in by the "new" flashy style, which is no more than a caotic bastardization of what The Monkees were doing years earlier, which is in itself a ripoff of the Dick Lester and Spike Milligan style pioneered in the UK (and carried on to the Goon Show and Monty Python's...).
This show is pop culture slang and poseing at it's lamest. Whenever they tried to present anything political or topical, they came off looking like Bob Hope impersonating Fonzie.
What really hurts is to see truely talented people involved in the show; particularly some of the better guest stars (like Lily Tomlin, Harry Belafonte, Debbie Reynolds, Danny Kaye, James Garner, et alia).
The best I can say for the show is that it didn't completetly rob such talents of their dignity, as it did lessor talents.
For a beautiful, 'with it', contemporanious show of that era -that doesn't look dated or dumb!- look no further than the enormous contrast of 'The Smothers Brothers Comedy Hour'.
The Smothers's, Steve Martin, Bob Einstein, and best of all - Mason Williams! These guys ran infinate laps 'round the dull 'Laugh-In' tosh, making it look easy.
And as a bonus, they had a political conscience and never backed down from their convictions, never looked like lames or posers, which is what most of the 'Laugh-In' jokers were. With a few notable exceptions, like Ruth Buzzi, who outclassed this show by a Wyoming mile all the time.
The Smothers's gave their guests and writers a meaningfil freedom, not merely an Anything (and Everything Goes) ethic. As Buster Keaton put it, comedy is a serious business. And you need to know what you've got to say before you blurt it out tactlessly.
No real change or improvment can come from reckless trendiness.