It doesn't say they won't, just that they haven't. It does say that they met with Boras, and it was implied that it was about Martinez.
If JD does opt out and receives a QO, it gives Boston the upper hand in negotiating, as the QO can stifle interest from a lot of teams. Bear in mind 2 years ago, Martinez drew very little interest when he was younger, still playing the field, and did not have a QO attached...