A more transparent post would have said something like "Based on my world view, assumptions, and preconceptions, he's bad at business. The common narrative of Dorsey is XYZ. Here's why that's wrong."
Saying "it's obvious" when you're expressing an uncommon opinion doesn't set a good tone for a discussion. Makes it seem like "I'm smart they're dumb I don't need to explain my statement that runs counter to conventional wisdom".
* Not saying it's right, just that this is what the Twitter board / media / insiders / VCs /etc. seem to think.