You can't attack Bitcoin by just using computing power. Any attack will come from bankers accumulating most of the available coins, and using them for their own inter-company transfers. This will make some of us rich, but inhibit the use of Bitcoin as a general currency imho.
I agree with this one. That is not the way Bitcoin can be attacked. By using sophisticated high powered computers and other computing devices through hackers and the like, I think that was TS wanted to tell us. Some groups also use FUD as an attack but all these things are not worth it as fo this time. What are their motives? To hack and steal? I think Bitcoin is not that easy to attack because of the secured environment and nature of the Blockchain technology.
Yes, attack on Bitcoin with super computers is not very likely. Hackers will aim on Bitcoin but still not in such super organized way with super sophisticated equipement, this sounds more like attacks that are sponsored by someone.
Also, I think that banks are not such enemies of Bitcoin as some are trying to show. Banks are also given some kind of exaggerated influence on cryptocurrencies that they actually don't have.