I mostly said segwit will take a long time to have any effect on block space. but I did also say segwit will have no effect in the event it never gets adopted. That is a possibility. It is not logically wrong. It maybe against your opinion.
Well then that is something else entirely. Posts that have weird formatting and/or punctuation can end up being interpreted wrongly. Are you talking about adoption (i.e. users) or activation (as in the Soft fork itself)? Because in the first case that assumption will never become true. In order for zero adoption everyone would have to move away from wallets that incorporate Segwit. What are the odds of that happening?
So why are you talking about the median? It is a completely worthless statistic with regards to this topic.
Because franky has been chasing both Maxwell and me (among others) around with his nonsense when he didn't even understand what median meant in the first place.