the split is because there was to many morphos users on the aros team, the team lost amiga coders, focus on a logo and cartoon mascot become more important than code. in the end it become difficult to stay on the right path. someone wanted aros to run on eifka, others wanted a more modern amiga lookalike os called analbus, then it all fell apart. the main goal the x86 and 68k uae integration was forgotten. as i see it now aros is pretty much dead and will not go anywhere, becouse of the split there simply aint enough coders that have any intressted anymore, sad but true.
