I have a Fairphone 4, as well, and I bought it for the very same reason. The previous phone was not a high end model, but it worked well enough for me until the battery just died from one day to the next. Was nothing I could do as it was glued and soldered, and there was no way for an amateur like me to replace it, so all of that still working hardware had to be recycled. That first made me angry, then it made me think, and I looked around and found the FP4 with its promise of being able to replace not just the battery but everything else as well, as well as extensive, long term software support. I have seen two major Android version updates already, and regular security and feature updates, so I am very happy with my buying decision.
I had not heard of this book. I just read the interview, both parts, and I must say, I did not think it possible, but I think I love Nana Visitor even more now. I will definitly buy and read her book.