I don't drink anymore, but I used to have a serious problem with alcohol (over 100 units a week). To answer your question, it's a mixed bag. There are people like you who rarely drink. And there are people who drink quite a lot more than is healthy and would struggle to go a month without alcohol, even when they appear to be 'normal drinkers'.
The drink at home culture is very much still in full swing - as evidenced by how drinking changed especially during lockdown. Many people I know were drinking during the day, while working, while home schooling, during lockdowns. Particularly people who are not young, have family responsibilities, need to be at home and have few opportunities to go out. They are drinking at home while cooking dinner. Or after the kids go to bed. Or having a bottle of prosecco while they start Sunday lunch.
You would be amazed at how much people drink when they don't appear to. They may meet friends for a glass of wine or two, but actually they've had 1-2 before they left home, and they'll go home at 7pm to start bedtime for the kids and open another bottle. But people don't talk about it.
I do a lot of peer support around problem drinking, and I very rarely see someone (like myself) who I'd class as an 'alcoholic'. Most of the people (mostly women) who I see are classic binge drinkers, whose drinking seeps into the week. They aren't drinking in the morning. They aren't getting arrested for drink driving. But they are drinking a lot more than their family and friends realise, because it's happening at home in a glass here, a glass there. And they are drinking most days. For them, going a whole month without alcohol is a real struggle, yes.
People don't talk about it though because there is a lot of shame, especially amongst women. I think you can see that in this thread already - everyone who has responded has said they don't drink or very rarely, me included. When I was drinking, I never would have come on a thread like this to tell you how many bottles of wine I was drinking in a day, because it was too awful to admit.