Wouldn’t this just encourage alt accounts to get around the rule? You’re only hiding it with sockpuppets instead of allowing it to happen transparently.
All communities get this way when they grow enough in size. There are only so many unique opinions to express on a subject, and a finite amount of interest someone will have to keep reading a thread. It essentially becomes a race to see who can express the idea first, and we have an easier time winning a race with fewer competitors.
The Internet is a river, not a pond. It was nice while it lasted, but we continue on.