I just read one thread about the red market "blaming" Vitalik Buterin. I find that laughable.
The real reason is people are starting to bet on BTC again and selling alts even cheap. It always go through this cycle before the alts really take off. Some also use the opportunity to collect more alts later...sell now (high), buy later (low). It can be a good way to play but very risky. I used to do it but learned I don't have the nerve to be in that game.
Play it, or HODL...both are valid ways to go. Just don't panic, bullish market is coming...BTC first then alts (may dip a little but) will follow.
Cycles have that name for a reason. Everything cycles, and what
traders do with Bitcoin do with alt-coins too. Panic makes your judgement
blurry, if you are buying or selling do that cause you plan to earn from
that.
What ever some important person do and say on TV can inflict on markets.
Everyone saw last year what happened with JP Morgan and other investment
companies announced what they think about Bitcoin, along with news with
China. People started to sell Bitcoins to buy Bitcoin cash. Never underestimate
power of the news.