The upcoming fork (and the previous one on october the 25th) certainly plays a role in the current giant bullrun. The developments around BTC have hit the media and an unprecedented number of people are rushing into crypto with the aim of making easy profit. A crash after the 16th could occur but perhaps even sooner because the current rise in value of BTC is too sharp to be stable. I've emphasized the words 'could' and 'perhaps' because the current cryptomarket is more unpredictable than ever!
everyone knows that prices will fall after every hard fork so that is why their is nothing new in upcoming fork of segwit2x on 16 November, prices will fall at certain point like $6.5k or may be maximum $6k, but as we all know the prices will always recover after one or 2 months and again bitcoin gainstability in cryptomarket.
If you have really followed the past 2 forks, then you would know that what you have said is not right.
Hardly was there a huge fall in any of the forks except for the China news that happened after the first fork which was even a month after and had nothing to do with the fork.
However, all forks have even proven to the users that it means even much more surge in price for bitcoin and even whenever we see some slight corrections; it does not even take up to 2 months like you said, before it recovers and head straight to the moon again, barely 2 weeks before we even see that.