I kind of agree and disagree
I think it’s very helpful as a learner when the material repeats itself a bit - you get some reinforcement of vocab, and it’s nice to have occasional passages which give you that feeling of “I’m reading this rather than just deciphering it!”.
That said, I found the repetition in Natsume to be just a bit too copy-paste. Reading one chapter after another meant you read that same passage over and over in quite quick succession so for me at least tedium won out 
I did find it easier each chapter (well, maybe by the third it started to get easier). Overall I think it’s been the hardest material I’ve tackled so far, barring Kiki of which I’ve only read the first chapter. I’m not sure whether it was the language - lofty spiritual conversations?- or the length of the chapters, but I definitely found it quite hard-going to get through each one.
Non non biyori had some dialectal stuff I found difficult to understand, but the chapters were very short and I got more used to it nearer the end.
Hmm, I think the last
my favourite 妖怪 too.
Overall I really enjoyed the art as well. I’m not sure it’s quite my style, but it was interesting to see such a different presentation format from the other manga I’ve read, and I really loved the sketchier, more free-flowing aesthetic.