BitcoinGold & Market manipulations attempt ?

I'm wondering, I'm not saying anything.
While Bitcoin was in full swing, on the 24th of October there were considerable simultaneous Alts purchases on the eve of the BitcoinGold fork.

We know that Coinbase announced that the fork expected on the 25th had already taken place.
(here my first post with this infos)
While everyone was storing his Bitcoins, some people bought the 24th massively & precisely at the same time.
I did it as well as I wasn't interested in BitcoinGold, but the situation is different. It looks like these people knew that its value wasn't going to have an impact on the market & took advantage of it to buy the best Alts at the lower price & sell them higher quickly.

Look how some well-known coins particularly moved at the same time