Stories of utopia are valuable because they give us a vision to aim at.
Stories that assume new technology will lead to a better world are anti-valuable. Those stories are the concrete truck of good intentions. The truck used to pave the route to hell. The stories inspire people — into creating things without any awareness of negative impacts. These inspired "builders" are often even oblivious to the idea that there might possibly be negative impacts! I've seen this play out with social media, with ML, and blockchain just to name a few HN relevant examples.
A good dystopia story seriously acknowledges some threat, and shows what it is viscerally like to live in that world, and perhaps how it came to be and what we might do about it.
A good utopia story seriously acknowledges some system problem or threat, and shows a way in which it is overcome on a large scale.