It's because they continued using the present tense.
Sure, I see what they mean now, but when you're looking at an article and start reading it, and get to a paragraph, written in present tense that claims something that has not been true for a few years, my brain at least labels it incorrect.
This isn't a critical reading skills exam; it's just one of the dozens of articles that crosses my feed-reader everyday and I don't consider that style to have helped the audience follow the author's point.