We don’t have a link to the article so we don’t know exactly what they’re doing, but I feel it’s unlikely that they’ve just replaced pints with half pints. Or maybe they have, that would be even weirder!
BBC has covered it too: https://www.bbc.co.uk/news/articles/c4gl737zr79o
Oh interesting! The only time I’ve seen 2/3 pints sold instead of pints it seemed to just be shrinkflation as they were still extortionately priced, I wonder if consumption is down just because you’re getting less for your money.
There’s a craft beer place near me (The Hopbox, Ware) that sells in 1/3rds or multiples therof. Some of their ‘beers’ are 13%. Not sure you’d want a couple of pints of that. But, it does give the opportunity to try out different styles when you visit, and there are quite a few ladies drinking them who’d maybe not be too comfortable with a pint.