95% of the altcoins will fail regardless of what bitcoin does, it's those 5% you need to watch out for.
ETH is already 1/4th of the value of bitcoin. Dash is also a large contender.
Bitcoin is not invincible, and they should not act like they are.
Just curious, but how is Bitcoin acting like "they" are invincible? Apart from the few individuals on whichever side of whichever argument that can be conjured, I think most of us in crypto see any kind of dominance from any coin as ultimately good. Bitcoin grows, alts grow. Altcoins grow, so does Bitcoin.