“isn’t necessarily good for people” could expand to “is known to not be good for a certain subset of people” or “is possibly not good for people (or a subset thereof)” The second reading seems intended, not the first.
“isn’t necessarily good for people” could expand to “is known to not be good for a certain subset of people” or “is possibly not good for people (or a subset thereof)” The second reading seems intended, not the first.