I haven't watched For All Mankind yet, but Pluribus was great. It's received a lot of criticism for its slow pace, but those critics are likely not accustomed to or interested in pacing, character-building, and narrative development. It goes without saying that it's far superior to anything with the Trek name on it since 2009 (and better than most of Voyager and Enterprise).
I think a lot of people’s brains have been ruined by years of science fiction television as some combination of mystery boxes and shoot-em-ups. It’s pretty notable that I saw Andor—a series not lacking in action—get similar flack from (rando) viewers because it didn’t really conform to the way “genre” streaming shows are typically plotted and paced.
