I certainly do not dismiss the GBA and nor do many others (poke around the support sections and see how many people seek GBA support for things), if I write something about DS hacking I will include GBA stuff as does not make sense to exclude it and it is gaining some traction among ROM hackers. The DS however had several hundred projects "started" and wading through them to figure out what was what got tedious even if you followed things closely so we got that thread- that is what I was heading towards.
I do follow GBA translations but have not seen anything and unlike say megaman, fire emblem or pokemon the franchise does not descend into its own fanbase/circles and seldom bother to reach outside it so I doubt that has happened here.
Equally people can readily play the titles as they are good basic/obvious platform games, and well
http://www.gamefaqs.com/gba/369695-densetsu-no-starfy/faqs
http://www.gamefaqs.com/gba/917608-densetsu-no-starfy-2/faqs
http://www.gamefaqs.com/gba/921256-densetsu-no-starfy-3/faqs
http://www.gamefaqs.com/ds/930290-densetsu-no-starfy-4/faqs
Again I would love to see translations (though I have way to many projects to go in for these right now) and I could probably get behind a statement of they are the main thing, ignoring them being otherwise totally playable, in need of a translation on the GBA.