Dude, watch this:
https://www.youtube.com/watch?v=ncPyMUfNyVMYou don't understand how Bitcoin and the blockchain works. The amount of computational power you would need to severely disrupt the network at this point is just ridiculous, and they would lose tons of money trying to do so. They would gain way much more money by being good actors. Learn how the consensus algorithm works before you drop your next FUD thread.
Attack or not, bitcoin will be replaced. Lack of development.
.......What, you're making yourself look stupid. Just because bitcoin isn't rushing to push unneeded updates out and constant gimmicks doesn't mean it is lacking anything and you're obviously bias with your altcoins under your username.