Kanye’s 808 & Heartbreaks has been claimed by many rappers from the 2010’s and onwards to have been a major influence. He really went all in on autotune and introspective lyrics. I much prefer Dre but his influence is waning.
The specific claim was "the most popular rapper/hip hop artist of all time". For that claim, I don't see a good reason why the last decade should weigh more heavily than the decades before.
