I don't get it, both you and the blogger seems to think that this is revealing some big gotcha, that haha! Fry is hiding his feelings! But it isn't, there is no gotcha, those are his feelings. To him, Twitter is a cesspool, those are his feelings about it. So, he stops using it and he feels better.

There are no objective facts to be had regarding the state of Twitter. This is not physics or mathematics. The state of twitter is entirely subjective. How is Fry ever denying this?

"uses the vocabulary of someone describing immutable and unarguable facts".. What does that even mean? It's using the vocabulary of Stephen Fry talking about this thing that annoyed him and how distancing himself from it made him feel better. It is entirely about his feelings.