By the time 1971 rolled around, the creative spark that made the original Flintstones a prime-time hit was largely extinguished, replaced by the Hanna-Barbera assembly line. The Pebbles and Bamm-Bamm Show is the result: a show that tries to capture the 'teen' market by mimicking the Archie comics formula.
Pebbles is now a headstrong teen, Bamm-Bamm is her shy but super-strong boyfriend, and they hang out with a group of friends (Wiggy, Penny, and Moonrock) who fill out the standard sitcom tropes. The plots usually revolve around high school dances, misunderstandings, or Pebbles' latest 'get rich quick' scheme that inevitably backfires.
For a modern parent, the most striking thing is how much it feels like a relic. The animation is limited, the backgrounds are recycled, and the humor relies heavily on 'rock' puns that were already tired by the mid-70s. It isn't 'bad' in a harmful way—it’s actually quite sweet and innocent—but it struggles to justify its existence in an era of high-quality, high-concept animation. If you want to introduce your kids to the world of the Flintstones, stick with the first two seasons of the original show or the 1966 movie A Man Called Flintstone.