The issue I think I have with a lot of this stuff is that's it's been written well over 100 years ago. The language is hard to understand, and these authors rarely get straight to the point. It's hard enough to get my head around modern political texts, never mind the old ones. This isn't just a criticism of Krapotkin, Marx is even worse in this regard. I still don't really understand half of what the communist manifesto is talking about if it's even relevant anymore. Old texts don't always deal with issues like climate change or overpopulation. It's easy enough to say we can feed people now, even with the overpopulation, but once climate change kicks in hard it's another issue.

I would also worry about counter-revolution and why anarcho-communist revolutions haven't stuck to the extent other revolutions have. There are lots of nations that have tried marxism, few seem to have had anarchism for a similar length of time.