I would be happy for them.
I grew up abroad and when we emigrated my mum and GF had an argument and he accused her of taking his grandchildren away from him. I was a tiny baby when we moved and I never met any of my extended family until I was around five years old, and then we went back and I didn’t see any of them until I was almost twenty and consequently had no relationship with any of them.
However, the grandparents who claimed to be so devastated never actually visited us there once, and we never came back to visit either, time and distance being what it was at the time.
But in truth that is life. If you raise your children well then you raise them to become independent individuals who will one day forge their own paths in society/life.
My mum says now that she understands how my GF felt now she has grandchildren of her own, but she would never put barriers in our way.
Interestingly though I currently live a few hours away from my family although in the UK and I am planning to move back to be closer to them when my dc leave school because they have been incredibly supportive of me when I’ve been in poor health and as they’re not getting any younger I would want to move closer to them now.
But anyone who piles on the emotional blackmail is incredibly selfish and tbh I imagine is at risk of causing a rift between themselves and their children even if they live in the same town.