Maybe they would be interested, but maybe not - because I doubt that people who are mostly deeply immersed in altcoins have the slightest desire to study the history of Bitcoin. If we're going to be honest, for many, the history of Bitcoin only begins at the end of 2017, when Bitcoin actually entered the mainstream.
I can't say for sure, but it seems that I read on the forum a few years ago that someone had a similar idea as the OP, so although I have nothing against people writing books, a good part of the history of Bitcoin is also contained on this forum. In any case, I hope that the book will not promote things that have nothing to do with Bitcoin, as is usually the case nowadays.