You’ll notice that I qualified it with “the kind of nationalism that…”
I don’t have a problem with the kind of nationalism that gave European minority languages pride in their own culture and literature in the 19th century, for example.
I do have a problem with the kind of nationalism exemplified by lots of 20th century European leaders from Kaiser Wilhelm II to Milosevic.
The latter kind is sadly on the rise again. And the former isn’t endemic to nationalism. Everyone can have pride in their identity, it doesn’t need a state apparatus.