That chart works for markets with good fundamentals, not for bubbles for which demand is gone and keeps decreasing.
You seem to keep taking for granted that BTC will go in a strong bull market again. That's an assumption that might be totally wrong.
Exactly. It's an assumption, not better or worse than the opposite one.
And that's also how you distinguish posts (and users) that are worth reading from those that are not, bulls and bears alike:
"No way Bitcoin could possibly fail. Only chance for that to happen would be Space Lizard manipulation. 10k USD per coin early next year, for sure!"
and
"Get out while you can! The bubble has finally popped for good. No chance it'll recover from this. The network and its currency is worthless!"
are equally worthless.
The only difference between bull trolls and bear trolls: among the latter there's a much larger share of newly registered accounts. Could be because of the ongoing bear market (and because the very earliest investors aren't bearish enough yet), but could also be because the bear trolls don't stick around once the market recovers.