If anything, I think it's that kind of Singularity/posthuman SF that's getting a bit retro now, at least in prose circles (mass media SF tends to lag a couple of decades behind the literature). There was a ton of stuff like that in the '90s and '00s, but I think now we're seeing more writers skeptical of the idea and recognizing that upward technological and social trends tend to plateau eventually rather than rising infinitely. And that uploading data means copying it rather than moving it, so that an uploaded mind would not be the original mind, and thus a human consciousness still needs to reside in a human brain. Where I see clouds and information networks in SF these days, they connect and unite biological humans rather than replacing them.
I'm willing to believe that Singularitanism/Transhumanism is a bit retro now in the writer community. I'm not a writer, heck, I don't even read a lot of contemporary science fiction.
Still, I think in a more abstract sense, it would be very hard to predict when we hit a plateau, except perhaps by specialists. I'm willing to believe we won't develop ways to "upload" human consciousness, but I still think it is a lot more likely that we'll eventually develop human -equivalent AI, capable of operating fully autonomously , -as efficient or even more so than humans-, than that we'll obtain warp, based on the simple observation we exist so we know it is possible, whereas for warp speed there only might be some marginal indications it might be possible to effectively circumvent the local C limit. Sending such units out probably would be cheaper and more efficient.
I doubt it. We're still humans, and part of the human experience is "doing it themselves". You haven't "been there" until someone actually has been there. We got tons of rovers on the Mars doing lots of important scientific work. But there is still an enourmous drive to get there in person.
What IS dated, is the notion of "being out there, farting round, and going where-ever one just feels like", as seen a whole lot on early ENT, and the final scene with Pike and Spock in season 2. But that was already dated back during TOS and TNG - a much better mission statement would probably be "our observatorise/drones/whatever catched this weird thing in the xxx starsystem, now we go there personally to science it directly".
True.... unless you are the person/organisation who actually has to shell out the money to make it happen with real humans. Why go through the costly trouble of devising ships that maintain life support, an internal atmosphere, have food on board, find ways to protect against cosmic radiation and other dangers, when you can build nigh-invulnerable units that can do it every bit as well as humans and don't need al those extra conditions? (Of course this is based on the assumption we do succeed in developing true human-level or beyond-human level AI). Only based on the emotion that otherwise "we" haven't truly done it?