Okay, engineers are now supposed to evaluate the roadmap to strategic goals. in principle all good that everybody is involved in lining up with strategy. But the caveat here is, the CPO and leadership team should do this. And if this does not resonate with the engineers, is it really wise to educate the product manager by sending him/her some literature on how to do strategy?
I would suggest to handle this if this occurs with more care. And also consider that many very successful companies did not have a written mission and strategy, it is usually introduced in the scale up phase when stakeholders demand more on the why and how.