I think what he means is that not all spinoffs are equal. Theoretically some spinoffs
would have higher market value than the original coin, while others would be completely
worthless.

So the spinning off can be used to identify the features of the coin where the economical value resides.

If you object to "rich getting richer", consider the fact that you can always make a spinoff of Bitcoin and distribute
it to Doge or any other altcoin owners.