If he had a peanut allergy, would you question not having peanuts in the house? I mean, eating peanuts is no big deal if you don't have an allergy to it.
I'm with the other posters, what's the big deal about not having alcohol in the house? Lots of people don't keep alcohol in their houses. If it is just a beverage, then drink a different beverage.
I quit drinking 8 years ago. I don't want to keep alcohol in the house. I doubt I will ever want to keep it in the house. I would be seriously concerned about being in a relationship with someone who thought alcohol was so important that they would push me to loosen up my stance on this.
Kudos to him for taking his recovery seriously. Kudos to you for posting and asking the question.