You are making the mistake of assuming newcomers think like "addicted" Wikipedians or persistent troublemakers. This user only ever made about 25 edits and stayed just over a month, unless he or she got an account or switched IP. This goes in the same category as: "Anyone with good intentions can get through the 6757836 step New Article Wizard, so it's not too complicated" "It doesn't matter if someone gets wrongly blocked, because they can just request to be unblocked."