a little bird told me that bitcoin prices can survive without other coins, whereas the price of other coins can not survive without bitcoin.
I think bitcoin is very influential in the world of cryptocurrency.
well that is true and false at the same time!
we all know that all the altcoins are greatly influenced by bitcoin price. and mostly in a negative fashion meaning as long as bitcoin is making a big move up
or down, altcoin prices will fall down big time. and when bitcoin is not making much of a move, altcoins can start rising or getting pumped.
and the first part is true that bitcoin is not depending on altcoin prices and will survive without them but it may be affected by them too. for example their dumps may cause some drop in bitcoin as some people choose bitcoin to exit to fiat or have to other way so they sell to BTC then sell BTC for USD and that can crash bitcoin a little at least.