They're a major source of spam and abuse if left unchecked. If you make constructive comments with such a new account, they're likely to be noticed and vouched

They're a major source of spam and abuse if left unchecked. If you make constructive comments with such a new account, they're likely to be noticed and vouched. (See https://news.ycombinator.com/newsfaq.html https://news.ycombinator.com/newsfaq.html and search for 'vouch'.)