A good but unsurprising list. That said, the article begins poorly (my emphasis):

Utopia is the state of a civilization’s peace and prosperity that seems impossible to realize in real life, and it is the backdrop for many great works of science fiction like the “Star Trek” media franchise.

I’d say there are startlingly few utopian SF settings or societies. Early Star Trek certainly counts, though more recently it returns to a more cynical sort of stealth capitalist/corporatist framework (Picard). Apart from Banks’ The Culture books I can’t recall any recent genuinely SF utopian visions—can you think of any?