These articles are probably exactly what we need right now. If the popular sentiment is that we're in a bubble, we may manage to avoid becoming one.
given the rise in value, ill take this chance to agree with you on this

You can't blame them for suggesting it's a bubble, many people within the Bitcoin share their view that this is a speculative bubble.
id agree that there is a much larger chance now then there was two weeks ago(when the price was 50$) that this could be a bubble. but i dont so much care if it is or isnt. rather it will be interesting to see where the price ends up if it is a bubble. I dont expect it to drop below 50$ even if this is a bubble. in either case the value still rose.