Despite the opinion that altcoin prices will pump with the downfall of Bitcoin, it seems cancellation of the SegWit2x fork has negatively influenced other cryptocurrencies as well.
However, most experts still think the price tendency for altcoins will be opposite to that of Bitcoin. John MacPherson, a cryptocurrency expert, Anti-Fraud and Compliance Manager at Wall of Coins, a peer-to-peer market for buying and selling Bitcoin, stated to Coinidol:
“I think the slaughter on alts will remain as long as bitcoin is pumping because unless a comparable amount of money is dumped into an alt, the price rise in bitcoin will continue to drop the price of alts. When and if that bitcoin correction does happen, I believe alt season will open up again.”
https://coinidol.com/altcoins-price-analysis-bitcoin-pump-is-slaughter-for-altcoins/