Thanks for the feedback, the boilerplate template was wrong. We've updated product description pages so they're clearer now (Clearly states DRM free)
Looking at the info about the formats for that book it seems that the ePub and PDF are unrestricted.
The second statement is probably boilerplate but is concerning.
Yes, you're right, it's boilerplate and needs to be updated to reflect that O'Reilly books are DRM-free and can be read on any device, I'll get it updated tomorrow.