Gotcha - I feel that frustration on my end as well. Let's chat but both stay strong and remember we're on the same side.
I will also be taking my own advice, because, let's be honest, I can be a real asshole at times.
It is when we're talking about "bringing out the vote" - regardless of specific demographics. Bernie was touted as the man who will bring out the young vote - and he objectively did NOT. That fact is not in question - he failed at the one thing he was hailed to do. Given that, the only objective standard we have is that performance.
Now, you're saying that Primaries bring out different people that General Elections. Fine. Even assuming that's correct, the issue isn't who came out, it's the numbers of whomever did. Whoever was supposed to come out in the Primary DID NOT. Period. End of discussion.
With that objective evidence and empirical data, the only reasonable conclusion we can draw is that Bernie would not have brought out the vote in the General Election. You claiming otherwise is ignoring the only evidence we have - which patently shows your claim to be false.
Your analogy above doesn't work for the situation we're describing. We're talking about "whomever" comes out for whichever election - we can even stipulate that it will be different people, as you claim. Regardless of who comes out when, the issue is HOW MANY will come out. The claim is that Bernie will bring out more. And Bernie failed to do so during the Primary. Ergo, he would fail to do so in the General Election.
You claiming otherwise is ignoring the only objective evidence we have.