Many of the vote fraud deniers are the same types who embrace any and all statist nanny state laws with the old ‘if it saves one life’ canard.
Some of them may indeed “have good intentions”, but that, of course, is the paving of the road to hell.
They probably take the same view as they do with welfare fraud - they know the fraud exists, but it’s far more important, to them, that all who need “help” get it.
With voting, there are some sincere democRats who believe that it’s far more important that all who are eligible to vote get to than it is to make sure all the votes are valid. Of course 99% of the fraud works in their favor, so that’s icing on the “feel good about myself” cake.