I think that drinking and flying is a well known problem in this industry.
It’s not normal and can not be accepted but it can be understood.
We do not lead a normal lifestyle, definitely not on the long haul.
Any professional Airline knows this and should be able to cope with this.
Everyone can/will/may has some difficult moments in live where they exceed the limit of social drinking. If it happens to a pilot that has many years in the company and served them well then a normally functioning Airline would try to help the pilot sorting out his problem and recover him for operations later on.
Any other reaction would increase the problem. Pilots are human beings that live according to the rosters of the airlines.
I agree that the general public should be protected but the system needs to be fair to all including politicians, doctors etc…. I do not think that that’s the case.
So if it is not worth the risk .....then maybe the risk of going up in the office and telling you boss you need a break might be higher....what's the real problem ?