Hulk was a standout, yes. But most early-'80s sci-fi TV was still quite dumb; this was the decade of Knight Rider, Automan, Voyagers!, and Manimal. We got the smart, allegorical V miniseries in '83, but its sequel mini and weekly series got progressively dumber. It wasn't until later in the decade that we started to see glimmers of intelligence. The Twilight Zone revival started in '85 -- though it was alongside the well-produced but often staggeringly stupid Amazing Stories on a different network. We got the heartfelt Starman in '86, Max Headroom and ST:TNG in '87, and Alien Nation and Quantum Leap in '89. So it wasn't until the end of the '80s and into the '90s that we started to see multiple smart, successful genre shows coexisting.
As for the '70s, they also gave us ST:TAS and Kolchak: The Night Stalker, plus imports like Blake's 7 and Star Blazers. And there was some good stuff in the bionic shows early on. Kenneth Johnson started out on those before moving to Hulk.