This is very sad and it's holding Thailand back immensely. Mass masking is becoming vanishingly rare outside of China, South Korea and a couple of others. The pandemic is definitely ending, it is simply completely unnecessary to wear them as Thais are.
It will do Thailand a world of good to get rid of the masks. The direction needs to come from politicians, doctors and health authorities, the fear needs to end.
In the meantime, anyone can/should make the decision to just go out and about without a face covering, even if it feels a bit uncomfortable for now. Every mask less person helps this get back to where it needs to be.