I don't know how you figure this when it's one of the highest streaming shows ever, and has been praised by viewers/critics alike.
Maybe it`s just my timeline. I don`t doubt if it`s number 1 on Netflix right now. I feel like (for example) people are talking about it. But not as much as I would expect on social media. Especially when this is the final season. I`ve seen individual episodes of Euphoria, Walking Dead, Stranger Things teasers etc. Trend/mentioned more, and is anticipated more on Twitter than in any season Ozark dropped.
I also feel like no one ever ranks it up there with for example Breaking Bad, or other top ranked shows. Imo Ozark is up there. Even if I were to rank best shows of the 2010`s. Not just year by year rankings. I think many would leave Ozark out of there top 10. Me personally, I wouldn't leave it out.
Side note: Not saying Ozark is better than BB. But if I had to choose to rewatch one. I'd rather rewatch Ozark.