Deep Space 9 has a transcendental journey and remains one of the best written politics focused sci fi shows ever surpassing literally everything in the genre that has come out the past 30+ years, and is definitely worth watching just because of it, but the ending is basically a wet fart.
Sisko's original goal was to get bajor into the union which he didn't do and was basically forgotten and the show that up to this point had been about keenly written political intrigue ends with a hamfisted fight of literal jesus vs satan that wasn't even really nessesary for the plot.
On one hand it felt like they were cancelled and wanted to wrap shit up asap, and yeah I guess shit was wrapped up, as I wasn't left feeling "but what about x" but on the other if you want to wrap shit up asap why the fuck did you waste so much time on jesus versus fucking satan that nobody wanted to see???
It could have been better, it could have been worse, its a mediocre ending that thankfuly doesn't ruin or undo or negate what came before it, but still makes you wish it was better.
To be clear how jarring it is, this is a show about failed utopianism, domestic and international terrorism, diplomacy, statecraft, freedom fighting, war between superpowers, the civilians caught in the crossfire, soldiers fighting on the frontlines, crippled veterans, spycraft and fragile political alliances that ends with LITERAL jesus fighting LITERAL satan.
The show had religious themes of false prophets, castes and how religious institutions can help or hinder societies, but it was always in a matter of factly grounded way that worked well with the political intrigue, not literal magical angels and devils duking it out in hell.