I see nothing wrong with ignoring the intent of an originating author. Trek is, if not the very definition of a team effort, then at least a long and unbroken chain of those definitions, and much of it is good only because later writers realized what a shitty job the original ones had done, and turned it into something much more interesting. Spock and Worf are good cases in point, rewritten a dozen times but never in a way that would actually contradict the earlier takes in specific.
Little about Data's background is truly explicit. His history has never been shown in flashbacks, so we don't even have to worry about our eyes being unreliable narrators. Rather, the parties doing such narrating on screen have been outright villains or folks being misled, so we actually have little reason to think we really know anything about Data's past. Far less of the backstory of, say, Picard or Kirk is in the category of likely lies.
Timo Saloniemi