Why do people like the normal boba

Usually I get a fruit tea with "popping" boba and bla bla bla (from a place called bubbleology in UK) , but I tried one of the milk tea drinks and the boba was pretty much just chewy balls without flavour. It was quite nice but I didn't see why it was that good. Is that normal or is it meant to have a flavour?

Also next time I go back I am going to try another flavour of milk tea to give it another try - what would you recommend (I am pretty new to this) https://bubbleology.co.uk/drinks/ here is their website