No scolding or hate!
FYI: I'm actually in the process of dropping a delegated account that I play. And I know @jacekw has been on the verge of also dropping an account.
There are two main challenges to your idea:
It's a major step towards increased centralization (just like with the occasional proposals people make that Splinterlands should ban bots).
It is extremely hard to adjudicate. Without requiring extremely invasive software, there aren't any good ways to determine the difference between one player multi-accounting and multiple people in the same household all playing their own accounts. IP address solutions don't work because people can just spoof their IP addresses.
I do prefer that people are more upfront and transparent about their multi-accounting (or their botting). But the problem is that a lot of so-called solutions are imperfect and just result in people continuing the same behavior, just in secret.