I feel like we are in a bubble that is getting ready to pop. I can't believe that 2000%+ growth is reasonable or able to be sustained. I don't believe this is exponential part of the S curve, I've heard that in 2013 and 2014. We are well before exponential growth. I think the only reason we haven't popped is the futures.
i seriously doubt if alts would be going nuts if that was the case.
Id argue the opposite, if bitcoin is overvalued why would you buy btc? wouldn't you buy something not (as) overvalued?