Many schools and even parents teach their children rhymes. In worst scenario, rhymes are forcefully pushed into kid's brain. But is this necessary? These rhymes don't carry any meaning. Instead kid can be allowed to play freely or can be given some activities that can keep them engaged and also develop their innovative mind.
Free play is no doubt a good practice for tiny tot but rhymes are necessary as I have already mentioned and most people here agree that rhymes are necessary. If you have had experience with playing with babies or tot you will know that one of the best way to teach language to a child is through songs, poems, rhymes in any language, mother tongue or English. A child as young as 12 months tries to hum along if repeatedly exposed to rhymes.