the articles are well thought out but the main point is more or less "bitcoin is the best coin because its the biggest coin" and that is indeed true for today. the author thinks that it will not ever get challenged and will live on forever. the fact is all 1.0 tech gives way to 2.0 tech. ALWAYS. and Bitcoin for being as awesome as it is, and I do think it is awesome, does have very many problems. I do believe a faster, lighter, pretty, cleaner, stronger, safer, and more flexible protocol will come out and that it will someday gain enough market share to first challenge and then over take bitcoin. this the story of tech. The three contenders I am looking at are Ethereum (strong huge team, lots of advertising), NEM (medium sized directed team and large and somewhat equal investor pool which is a first in crypto), NXT (very loose team of devs working in lots of directions with a small but very rich initial investor pool to fun activities). To me Ethereum is the most centralized and NXT the most decentralized and NEM is taking the middle road path.