How so? Man creating life wasn't the big deal in "Measure of a Man" - indeed, it was dismissed as an issue both initially and eventually. Nobody really cared whether Data was this or that, as long as he passed the Turing test like any good little toaster; it was only in the middle of the process that Maddox or his legal adviser realized that quibbling over definitions was the way to victory.
Data is not a milestone in machine thinking. He gets admitted to Starfleet not because he would be interesting, but because he is not. Nobody studies him, until our heroes find out he's a Genuine Soong, at which point Maddox takes an interest. Other experts like Graves just laugh him off.
In Trek, there's nothing special about thinking machines. They are characters like any other: some are heroic, others are vile and menacing, yet others are amusing. It's just that they aren't limited in ways familiar from "real live" characters: they can be enslaved home appliances, overbearing overlords, simulacra of fellow humanoids, or all of these at alternate hours. And accordingly, their rights (and wrongs) are all over the map, too.
Timo Saloniemi