Joe Raedle/Getty Images News One Twitter user speculates that long-time bitcoin-fan Jack Dorsey might consider buying ether (ETH-USD), but @jack flatly puts down that notion, replying "No" in the thread. That exchange was triggered by Dorsey's comment of "HamsterCoin" with his retweet of Coincenter's Neeraj K. Agrwal's post that "Rep Sherman says the biggest threat to ethereum is dogecoin." None of the back-and-forth is helping cryptocurrencies. Ether is down 4.7% over the last 24 hours to $129.14, and with it Grayscale Ethereum Trust (ETHE) stock falls 5.1%. Hamstercoin (HAMS-USD) -4.5% to 0.36 cents. In other crypto, bitcoin (BTC-USD) drops 5.8% to $34.3K, Binance Coin (BNB-USD) -7.4% to $285.85, litecoin (LTC-USD) -6.9% to $138.06, and dogecoin (DOGE-USD) -8.9% to 24 cents. SA contributor Clem Chambers sees more downside in the cards for bitcoin and ethereum