Regardless of the implementation, i want something to archive and/or retain (in the working memory sense) my conclusions. As without repetition i feel like a majority of what i read, and any conclusions therein, evaporate. Maybe the author would argue that if i want to retain it i should study it! .. but i don't, it's just some article i read.
Are my only choices to invest heavily or become increasing narrow minded? The things i actually invest in i know quite well.. but what does that matter? I'd like to be generally, reasonably informed. I'd like some minor effort spent reading broad topics to not be in vain. Besides, even if i invested heavily - there's only so many hours in the day; only so many things i can invest in to properly retain.
It seems reasonable to me to seek software to aid in this. But it feels like the author is attacking the idea of PKM just as much as the implementations. I can imagine many implementations are akin to snake oil.. but the goal seems reasonable. No?