I cant explain why (which pretty much logically makes my argument void) but I believe that it does necessarily affect it one way or the other. It will create a feeling of "I need this to be acceptable and I don't have it". I imagine whats going on psychologically is a lot like the placebo effect.How you act when drunk doesn't necessarily have any effect on how you act when not drunk.
Alcohol depletes vitamins & minerals, affects serotonin, and is speculated to downregulate GABA receptors while upregulating NMDA (accounting for some of the withdrawal). These things, in addition to the psychological effects, are part of why alcohol increases anxiety after it wears off following heavy use.
If A person gets drunk to lessen SA, will it make the person more anxious when interacting with people when they are not drunk?
The obvious answer is yes. I'm interested in the "why" you think so.