As a Professional Animator/Graphic designer & an 'Art Director',
I can say that the 'Slow moving test program' you are referring to, is factually a PERFECT program to stimulates the babies Brain!
It has the right blend of various elements.....Music, Motion, Colours, Patterns, Textures, Characters, Gestures & Facial Expressions!
It is specifically made for babies around 6 months, Obviously adults wouldnt understand or enjoy.
My boy LOVED that show when he was 5 months, he used to laugh & enjoy seeing those characters move & smile (especially the cat & octopus). Later 'Puzzles' became his favourite program, then he moved to 'Train & Number', then to 'Big Bug Bands', now @16months he loves 'Charlie & Numbers'
And My nephew who grew up watching BabyTV, have a good command over English at just 4years of age.
So from my experience I can say, baby TV is a VERY GOOD educational channel in ENGLISH. It helps tiny developing brains to GRASP meaningful & knowledgeable content.
Since they have all kinda educational content & interesting shows that are specifically made for 3month babies to 3year toddler, No Indian channel can compete them now!