Setting aside the odd use of the term "racist" (counting Englishmen a distinct race sounds very 19th century)...
> "All English are dunks so I'm forced to avoid them."
That's not what drieddust said at all. His (her) problem isn't with the English being drunk or not - it's with the English expecting him (her) to drink if he wanted to be part of their in-group. Which is a reasonable complaint.
Taking any nationality as a race is stupid. The whole notion of race is stupid. And racisim is now impossible because race doesn't exist. It's a shorthand wherever it is used. Read culturalist if you prefer.
There are a large number of teatotallers in the UK. There are large numbers of people who don't like to drink much and don't drink often in the UK. There are people who like to drink often to excess. Rain is wet, sugar is sweet...
It is difficult to find a group of friends when in a new country. I've heard expats claim Indians don't accept white people and scoffed similarly. I'm sorry if you haven't (yet) found a social group you like. Blaming the inhabitants of a country because of their culture, attitudes and practices for that is not something I have to treat with respect - whoever does it.
> "All English are dunks so I'm forced to avoid them."
That's not what drieddust said at all. His (her) problem isn't with the English being drunk or not - it's with the English expecting him (her) to drink if he wanted to be part of their in-group. Which is a reasonable complaint.