A minor fall of BTC and stupid money goes panic selling.
Get it into your head:
-unless you have a really really really large investment in BTC, BTC won't bring you as much profit as the best alts that have not already been too pumped up will
-BTC is not end all of all crypto. It is important but crypto does not depend on it
-crypto will not die, it will grow much much much bigger so stop panicing!
-if you chose good alts, you have nothing to panic for! If you don't trust you chose good alts, you shouldn't have invested in the firyt place
-buy BTC with FIAT!
I disagree completely with your second point, most of the coins move or are influenced in a very strong way by bitcoin, as soon as there is a strong movement in bitcoin almost all the coins begin to move in the same direction, bitcoin is not just an important coin, bitcoin is the coin to have and hold and it is the most important coin and without it all the market will disappear.