Yeah it was kind of sad to find that out, when I was watching those Captain Documentaries... Yeah the guy is pretty damned out there.
As to the OP.
Yes, DS9 is the bomb and for me, the greatest Trek, especially Seasons 5-7.
And from that day on, I went and watched through all of it and it and realized the work of art it was.
As they point out in the video, it was said to be "The Best Show on TV that no one noticed".
Season 4 really starts it for me, though season 3 is as strong in some ways (Garak torturing Odo was chilling, but his arc wasn't done in any way even remotely "cliché", it was exceptionally well done) in a re-watch season 1 fared a lot better than on original transmission - but I'm older compared to back then.
Years ago, I was already a Trek fan but had never really indulged in DS9 too much, but this trailer came up on my youtube one day:
I really wanted to like the presentation, except the backing music (muzak?) drowns out the dialogue it's supposed to be complementing. It's not an uncommon problem in both professional studio offerings and fan offerings nowadays, especially as everyone else was harping on the 2005-present run of "Doctor Who" in much the same way while I was more interested in story content or lack thereof. Ditto for other shows at times. Which is all sad, really, since in decades' past where the technology required more effort to do proper mixing compared to today's easy-peasy production software and Adobe Premiere and AfterEffects are not difficult to use at all in that regard. And yet examples of drowned dialogue are very few back then, when compared to today. Are the makers half-deaf between the frequencies of 90-250Hz?. One needn't have perfect hearing to tell the makers of the mawkish schmaltz were too wound up with the muzak and subconsciously kept the volume higher because it sounded cool - thus missing the point entirely, if not selling a completely different point - that it's not about the frosting but the cake and DS9's cake is so rich that it doesn't need gobs of frosting to proverbially deafen the ears with, but the frosting definitely added to the piece. But wasn't THE piece. Now other cakes, made with sawdust and other empty filler, need as much maudlin mush as possible to cover up the flavorless cellulose... (Which isn't to say cellulose is a bad thing, it helps prevent clumping in containers full of grated cheese, but after n% it starts to dilute the advertised end product... and eating 100% sawdust or 100% frosting isn't good either...)