In the original 70s show, the concept was to show off sexy women.
This created a whole genre called 'Jiggle Shows' that were simply excuses to show attractive young women running around so a male audience would tune in, and the concept worked amazingly well. The show entered the public consciousness and remains there today.
So who decided that the perfect reboot would star a lesbian, a librarian and an overgrown giant? Where's the sex appeal in that? It's as if someone decided to do a Star Wars reboot, but left out The Force, the robots and aliens and the space travel.