Attack? Really ?
In a free market, free result,...
Bitcoin
has a big problem with transaction fees now, the future is now. If another coin, BCH, NTRN (20 Mb block size, and 79 seconds block), BTG, AMC, ELC, BET, OTHERALTCOIN,..., solves this problem that "Core" refuses to solve, BTC will return to his value, 0.
Most of Altcoins value is near to 0, this altcoins have no use, have no liquidity = no value.
you are only half correct. i agree with the second part i didn't quote, the value of bitcoin is coming from being a "medium of exchange" and i hate it when people say bitcoin is just store of value.
but none of it change the fact that bitcoin cash is an attack on bitcoin. all those other altcoins you named and all the rest you didn't don't do anything to bitcoin and how it works. if some arbitrary coin goes to $1 trillion dollar per coin or drops to 1 cent per coin nothing about bitcoin will change.
but when bitcoin cash goes from (pumped) $600 to $1800 and has a low difficulty (aka easy mining) that takes bitcoin's hashrate and causes the rise of fees. everything were perfectly fine with bitcoin and i was paying 1 satoshi for fee before they pumped bitcoin cash. and that is an attack.
it is a free market, yeah. it is also a free world but is it ok if i buy a house next to you and start burning tires in my backyard next to your window all day long?