If your ob has not bothered explaining WHY you need an induction and just seems obsessed with dates, then I would also hold out and insist on a proper explanation.

My ob is very low intervention and told me he would avoid an induction with me at all costs because, "I hate doing them." He only said I MAY have to have one when my waters broke - but even so, said to go home and wait and see.

Having said that, he also told me that there does come a point of diminishing returns when the placenta is no longer working properly so best to get the baby out but it doesn't sound like you're anywhere near that point yet and it doesn't sound like that's what's concerning your ob ... or at least if it is, he hasn't bothered explaining it.

And yes, the "it won't make any difference to me" regarding speaking to the gyno just sounds lazy and slack. I would keep asking "why?"