The New Yorker intentionally uses a bunch of archaic spelling and grammar to look smart despite the often mediocre content of what they're saying.

Are you focussing on the word 'focussed'? That is a correct spelling of the word and if memory serves, the New Yorker have written about how their style guide requires it.

Focussed is an acceptable, although unusual, spelling variant.

Indeed, cf cöoperation and etc... in their pages.