Well this is dated June 2018 and there was no reason for anyone to wear a mask then .\
I already said it was December 2019 and they were NOT Thais but visiting HK Chinese mostly.
I am no mask lover but perhaps i should start since non masking seems to have such a strange
effect on people's logic and thought .
Ha ha what has guts or living a normal life have to do with it.
I ALWAYS visit Bangkok New Year time and I remember wondering why so many wore masks .This was December 2019 . However this was only the Suk "vit line ...not others.
Jesus you sure you didn't get long covid or something similar or is it just old age?
Actually Hong Kong and maybe other SEA visitors to Thailand wore masks well before the Covid outbreak
Perhaps as many as 30 % of BTS carriage occupants were masked. This was probably due to SARS outbreak.