The expression of the post is in fact an opinion. After further explaining to you why it's clear that it is a strawman. Implying/saying "I have the proof I/we need" and providing you that proof. IE: next gen console open world/RT/Assets Streaming ports is the actual proof. To say it's not is simply ignoring the explanation given.
However, it's still all opinion based. It shouldn't need to be said in every post. Now I ask you. Do you have any proof in such situations that 10GB is enough for these ray traced, open world games?
Nope, none at all. But I'm willing to take a gamble based on my opinion (which is based on what I have seen and read so far). Thank you for clarifying that in your opinion it isn't enough.