Have you watched The Expanse? Is it underrated?

At the beginning of Last year, I marathoned seasons 1-3 of 'The Expanse' and watched the newest season when it released. Even though I've enjoyed the show and it's had four seasons, it seems like virtually everyone I know has not seen the show, and it doesn't appear to receive any hype.

I feel like it's one of the best Sci-Fi serials we've gotten in years. Have you watched it, if so, what's your opinion on it?