Yes baby beetroot leaves are edible and so yes you can eat baby beetroot leaves if you want too.
The leaves of beetroots including the baby beetroot leaves and the stems of beetroots are edible, and make a great substitute for any green such as spinach, swiss chard, and bok choy.
They are healthy for you and the baby beetroot leaves as well as full grown beetroot leaves make good food for salads and sandwiches as well.
They provide health benefits and provide needed nutrients.
So if you like the beetroot leaves you can also eat the beetroot leaves along with the beets.