Hi,
I have a question, but please direct me to a post if already asked:
In case of another GFC, would
BTC bitcoin price:
a) stays on the same level

b) skyrockets

c) tumble down

Take your pick:
Anyone know where this image was originally published?
And if another GFC were to happen, I don't think the general public is ready to put all of their fiat into a cryptocurrency quite yet. There is still a liquidity issue and the tech issue.
I think you're right, a lot of people wouldn't. But if some did such that bitcoin started rising in contrast to a falling stock market, it would look pretty attractive. That might draw more people in. Additionally, if a bitcoin ETF is available so that average stock market investors can buy in very easily, such a crisis might give bitcoin price a good boost, at least for a short time (maybe another bubble?).