It's pretty much common knowledge at this point that alcohol in small amounts (1 drink per day for instance) can actually be beneficial to overall health, so if someone were to drink one beer a day it wouldn't be detrimental to their goals. And the main thing is overall daily caloric and macronutrient intake. So if you are including the calories from whatever alcoholic beverage you are consuming and still meeting those requirements based on your goals, I see no reason this would be a problem. And the thing about eating carbs in the evening is largely a myth. As long as your caloric and macronutrient intake are on par, you're good.
As far as alcohol interfering with protein synthesis, I haven't heard this. It could come from the fact that alcohol can lower your testosterone levels for up to 72 hours, which of course would significantly affect protein synthesis. But if you're not binge drinking and are actually able to stick to that small amount per day or less, I don't think this would be a problem. And remember that eating a healthy diet and lifting weights increases testosterone, so for those worried about it this shouldn't be an issue.
I know I'm responding to a thread originally posted 6 years ago, but it was one of the first that came up with the keyword 'alcohol' so I figure people will still be reading this.