Possibly true regarding horizons VFR IFR etc, however I've personally flown (legally) VFR day with no discernible horizon at all - should that too have been IFR?
I completed my night rating here in the U.K. at Gloucester in an R22, and I'm not ashamed to admit that I found it difficult. Had it been a larger or more stable machine would I have found it easier? Yeah maybe.
Our point about the 22 is pointless to this thread anyway, as the R22 is not a CAT machine