Living somewhere is not the same as being on holiday. There is a different mentality. Know one goes to bars everyday back home. Maybe 1-2 times a week at best! Going to googo bars would be like an occasional strip club at home. I don’t do that more than once every couple of months.
Inflation is everywhere. It is why local people to a country are looking to move to a cheaper country to stretch out their dollars (partly driving up prices where they land).
So yes, 50k is doable unless you are a local living on a local salary in which case, you would be looking to move to a cheaper country than your own.
Most expats (with foreign income stream) should be fine with the weak baht offsetting some of the inflation.