Yeah, so what that paper shows is that 6-7 cognitive tasks show low involvement with the language areas. What it doesn't show is that all cognitive tasks are independent of the language areas. As the paper itself admits, some forms of reasoning seem to involve language.

It demonstrates what divides the brain, actually, if you read her other papers and public layperson statements as well where she claims we don't use "language to think" as mental events are specific and language is arbitrary.