That Gaza is a prison is to some extent true. Thanks to Egypt, as much as Israel. In fact in less troubled times, as I've already written, Gazan workers commuted to and from Israel and factories in Gaza did business with Israeli companies.
But that its inhabitants are on "minimum rations/healthcare" is absolute nonsense. Enormous amounts of aid flow into Gaza from many directions, nobody goes hungry, there are modern hospitals, and patients who needed particular treatment were taken to Israeli hospitals, even after Hamas took over in 2006 (or was it 2007?).