Indoors it can be pretty much the same, if you only care about getting fined and not about the judgmental looks from other people/constant arguing with clerks and security guards
According to current rules you don’t need to wear mask outdoors and indoors while taking pictures, so in a super rare occasion when police approach you indoors, you just take out your phone and say you were about to take a selfie
Slowly, but it’s happening, here in Taoyuan too. Tonight on my walk around a riverside park bike/walking path I saw about 15 people walking and 4 or 5 riding bikes, and the majority were maskless. I was pleasantly surprised.