I'm not obsessed with fretboard material - I can hear the difference between a maple and a maho bass, but not really between an ebony and arosewood board. Any wood that won't fall off, warp the neck or look all too ugly, is fine by me. They don't have to chop off the last protected tree on earth for it either.
What has bugged me on the fretboard material of Gibson basses in the last decade is that the boards shrink more than they used too, almost all my new basses get spiky after a while. No idea whether that is more specific to ebony or to rosewood and whether baked maple will shrink more or less.