That article (which, btw, you're not even reading correctly - go back and look at its numbers again) is way out of date. You can see the actual, current pool share statistics in many places online. The author makes a lot of baseless assumptions and glosses over a lot of details and then uses his ill-derived conclusion to peddle an unproven proof-of-stake system. It's sensationalist bullshit. It's fake news.

https://coin.dance/blocks/thisweek