It might be a good idea to add gold to any portfolio for when a crash would occur. It has been a safe haven in the last financial crisis so even for that reason alone people might be looking to move money to gold and silver again which will make it go up (somewhat of a self-fulfilling prophecy).
In any case the biggest losses will be made hodling fiat.
For my perspective think that it wont be effect at least not that much ok it might go down but bottom line for support think it will be around 3000-3200 $ per bitcoin.
So if crash comes price might go to this line.
A long term bear trend in BTC/crypto's would easily push BTC sub $2500 imho, we were sub $2000 just a couple of weeks ago.
Of course it is really good and to hold and hedge gold/silver and include it in our portfolio which have been a practice of people who are really preparing in an event of financial crisis. But casuals like me can't, so I have no choice but to hold fiat and crypto's in general.
For me if a crash comes a long, it would be around $3000 lowest point. I agree we were sub $2000 a few months ago, but it has risen dramatically in the last couple of months pushing to where we at right now. We can't really predict when its gonna happen, but the best thing to do is be ready for this 'self-fulfilling' prophecy.