I thought that was quite interesting when I first read it. I'm content with my own scraggly voice these days, although it took years before I could stand to listen to it. I don't even have a falsetto but wish I could develop it for songs like "Runaway", "Crying", etc. Larry Henley, who did the high voice in the Newbeats' songs, couldn't explain how he did it; it was just there, but may have indeed been related to a technique such as you describe.
The technique with the thyroid lifting doesn't even deal with a "higher" pitch of the voice, that's often overestimated to make a voice more female. Resonance and overtones are equally important. This woman born with male body characteristics manages the technique extraordinarily well, but I think she had good prerequisites and not an extremely male voice in the beginning... I admit, probably too much hard training necessary just for the purpose in question here...
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