No, I will grow into Unhealthiness in a Food-rich location, since all that it means is that each population point costs 3 Food to feed instead of 2 Food to feed. If Food is high but production is low (like a Coastal seafood location), then you'll want to 2-pop-whip or 3-pop-whip a lot of items, so growing into Unhealthiness can often become a great way of increasing your production without killing your Happiness due to too many 1-pop-whipping actions.
Generally, though, for an average City, then it depends what I am doing:
If I am growing the City using Grassland Farms, then yes, I will switch a Grassland Farm to a Mine or a Cottage or a Workshop or whatever other improvement that I have, since a Grassland Farm only provides 3 Food... and if a population point is going to eat all 3 of those Food, then it's probably better to do something else with that population point.
Another opposite example would be Flood Plains Cottages... while it sucks that all 3 Food get eaten, you are still working yet another Cottage, so in that case, I would still intentionally happily grow the population point, as I'd still be working an additional Cottage... think of it like working 1 additional Grassland Cottage when your City is not unhealthy--the cases are equivalent, except that when you obtain more Health Resources, the Flood Plains square will essentially net you +1 Food later, whereas having surplus Health will not net you any additional Food in the Grassland Cottage case.
Another thought is that I do not use the "Halt City growth" icon. I think that it's personally just there to trap newbies... but maybe there are cases where it is useful that I just do not know about. However, it's too easy to forget to turn off this option and have your City stay small for centuries that I'd rather just grow into Unhealthiness or even Unhappiness.