I've been watching some of the old Flintstones episodes from the 60s, they aren't exactly laugh-a-second (or even laugh-a-minute) and the exchanges can be a bit cruel at times, but there's a weirdly comforting vibe to them; the stone age world aesthetic is wonderful with the flat-shaded thick-outlined neanderthals in front of beautifully painted backgrounds; and the slapstick is very well executed given the limited animation they were dealing with. This show certainly does visual humour better than verbal - the few belly laughs I've had with this show have been facial expressions and stone age technology (a tiny sundial being hung on the wall? comic genius). Laugh tracks can be a bit awkward at times but the sound mixing luckily makes them very quiet. It grew on me, but I can totally understand why it hasn't had the same consistent rerun staple status as Looney Tunes and Scooby-Doo. Looney Tunes, despire predating the Flintstones (and TV as a whole), is meta and post-modern, The Flintstones is not. Scooby-Doo's episodic mysteries and beatnik aesthetic aren't provided by many other cartoons even today, but kids have plenty of caveman and dysfunctional family stories to choose from now.
It's kinda funny how the Simpsons, despite "dysfunctional family" being the hook, have a way more stable relationship than the family from Bedrock. Also, the Fruity Pebbles ads are completely OOC - Fred would be the aggressor and not Barney if this were the show