That was absolutely fucking terrible.
I guess there was a germ of something buried deep in there. Pebbles and Bam-Bam having wacky dinosaur adventures as the A-plot while Fred and Barney do their dull sitcom shtick in a B-plot... it COULD almost be entertaining. But the animation is so fucking bad. And while I can tell some of the jokes are almost funny, everything looks so listless that none of them land like they should.
Also, I know they don't want to go through the trouble of recasting because it's The Flinstones and who in God's name cares, but I've HATED this cast since they started using them in the early 2000s. Jeff Bergman's Fred sounds old and worn out, Grey Delisle's Betty has that awful Brooklyn accent from fucking nowhere, Kevin Michael Richardson's Barney is trying to imitate the season 1 version of the character that nobody remembers, and Tres McNeille's Wilma is... good, actually. She can stay. But I hate everyone else.