They keep popping up everywhere and even potters who have done straight handles for almost all their working life switch to side handles!
In Taiwan that is. But looking around instagram and other media it seems to be the new craze.
Previously mostly found in the Japanese tea arts they overtake the Chinese way too.
Each their own, me myself I do not like to use the side-hendled pots. Maybe it just needs more practice, but I feel I have better control with a straight handle. Then again I am left-handed which makes things more complicated as lefties are more rare…

Anyways, just an observation

Everything is subjected to trends and fashion, even our beloved way of tea.