This article really aged badly, didn't it?
I fail to see any serious problem mentioned at all through the article. In fact, the only problem that they mentioned was the fact that this rally may not be long lasting, which isn't even a problem considering that nobody expects a prolonged bull market at this stage yet. I thought at first they were talking about some fundamental issue about the network judging from the title.
Which is why news shouldn't take too long with analysis on price, especially when these surges will break quickly either way.
I think the volume problem is an issue, but that's only technical, and, if you believe the explanations that there aren't explanations for the 5k surge, then well, even the surge was technical rather than fundamental, so we get contradictions. Volume almost non existent comparatively for weeks and months, and then super-concentrated in the space of a day. So maybe volume's just not as important as we think, after all, and maybe even less so if accumulation is really happening.