I spent four years living in Asia … most of it in Taiwan where the shit was invented. Trust me I know more about bubble tea than you care to imagine and the last thing I need in my bubble tea is more sugar.
It's basically milk tea with a bunch of tapioca shit in the bottom. The tea is fine .. good even if not usually a bit too sweet. The tapioca is just filler … it's not bad, but pretty unremarkable … just gelatinous tapioca/rice balls in your tea.
Although the square is mainly the focus for us (although I don't think it's particularly egregious), my assumption is that his colleague was more taken by the patterned SC and textured pants as being "too different" and in totality the look, to him, appeared "busy". SF v. the masses once again.