[rougier]

The NC part was mostly to avoid having someone to sell the book on some platform without my knowledge.

[abetusk]

I'm not addressing the issue of whether you receive compensation for your work or your desire to have control over who copies it.

I'm pointing out that you've stated it's "open access" without making it open access, at least for a strict interpretation of open access.

[fault1]

this is not the (common) interpretation of open access, which usually means, "no paywall".