It's not that Disco isn't progressive; it's just lazily progressive. Case in point: the scene that bothers me to this day is Adira coming out as non-binary, just beyond cringe-worthy and very 21st century. As a viewer, the scene read like Adira was waiting to be judged harshly for their identity, and it just totally took me out of the era. By the 32nd century, I'd expect that being judged harshly for one's gender identity would be at least a millennium behind us, and the conversation should either have not happened or been so matter-of-fact that it was treated as nothing. I get what the writers were trying to do, and it fell so flat and felt so bluntly obvious. I'm all for the message, but the delivery was not great.
The saddest thing about Disco to me is that there were great ideas and great intentions, but the execution of those ideas was so poor. Really, it just shows that you can have great actors, great directors, and great concepts, but if the writers can't make it work, it just all comes apart.