If the object of peal ringing was merely to ring peals, then anything which made peal ringing easier would undoubtedly be an advantage. But since the object of peal ringing is not merely to ring peals, it may well be that things which make peal ringing easier can defeat the object for which peals are really rung.
Because certain expert handbell ringers have reduced change ringing on handbells to a fine art by a somewhat revolutionary method it would seem to constitute a threat of some sort to the Exercise, at any rate that appears to be the implication.
Recently some of the principles of method construction have been explained in The Ringing World. These principles can be utilised for ringing advanced methods and splicing on handbells.