No would ever tell you that having a toddler comes with the stress of having to listen to their sweet babbles all day. You will have eternal, tiring echoes of crying and rhymes stuck in your head for weeks at a time. You will just be laying in bed around 3am with your brain unsure if you should sleep immediately or stay a little bit awake.
Kids learn at an interesting pace, teachers at kindergarten or nursery schools would always advise you introduce kids to educational channels. But don't make them listen to cocomelon, the results are not always great. Make them watch MsRachel. Massive improvements have been recorded in toddlers and kids who watch that channel. Channel name is; "Song for littles".
Toddlers are special gifts and they deserve love, the right kind of attention and direction to grow into kids we can be proud of, not juvenile delinquents.
It is the responsibility of parents to help toddlers learn the right values. As an adult, I can't remember the last time a good song I enjoy stuck to my head.