Sounds suspiciously like an assertion of ethics. Given your insistence that “voter confidence” is intangible and amenable to your particular understanding of it (as something which can be shaken by even a tiny but definite possibility of voter fraud) but not to mine or to any opposing ideological understanding of it (as something which must also be affected by the imposition of definite and actual impediments to the voting process for statutorily qualified voters), we must count your preference for this particular social policy to be of an adulterated moral nature.
Your argument, IOW, boils down to an entirely faith-based proposition.
Unless you are willing for the government to base such legislation on scientifically rigorous attempts at quantification of voter fraud, data driven estimates of its effects on voter confidence and sincere attempts to model the probable consequences of such legislation on a) fraud prevention, b) voter confidence and c) vote suppression, then your support for those acts is purely moralistic. And your attempts to deny this are either laughable self-delusion or bald faced evasions. Or likely a bit of both.