I can understand the point of people who don't like summit registers, but aren't there like 10,000 things with more impact on your 'wilderness experience"? Ex. fire rings, micro-trash in bivy sites, trails themselves, human p00p, T paper, other climbers, rap slings, bolts, fixed pins.....
I just fail to see any reason to get your panties in a bunch about a can on top of a summit when there are plenty of other worthy targets for cleanup.