There were other gems around that time though. I was chatting to friends about the Outer Limits just yesterday. Plus let’s not forget the other Star Trek franchise; Voyager.
I also love(d) Stargate SG1 (this was a little later too IIRC but much closer in time frame than BSG).
There were some pretty weird shows too. Some people liked Fargate. I personally couldn’t get into that particular show. But I did enjoy Lexx.
Edit: a little later (possibly around the time of BSG), but Firefly and Dollhouse shouldn’t be forgotten either.
I did rather like SG1s parody of Farscape for this (iirc) 200th episode.
"Go for Marty!"
[0] https://stargate.fandom.com/wiki/Wormhole_X-Treme!_(episode)
And for something more recent: War of the worlds (tv show from BBC+France).
I was never a big tv watcher, so maybe everyone knows.
Sadly, it doesn't seem it's ever gonna come back indeed. Not only because the US entertainment industry (mainly) decided to embrace new values but also because media format itself changed much. While streaming platforms bring big money to the table and technology made easier and cheaper to create worlds we see on screens, the series per episode become longer but shorter as a whole. And that IMO affects the true quality of production no matter how much these gonna be sprinkled with effects, big names in cast or marketing.
The old media had these filler content that allowed audience to get accustomed with heroes, see their weaknesses and strong sides, explore their backgrounds while all what's made today bring flat stereotypical characters and worlds that personally remind me of cheap fanfiction.