This is obviously not an easy thing to define, so I am intentionally not providing clear resolution criteria. It will be deemed substantively protected if it meets most of this non-exhaustive list of criteria
There is a clinic in each state other than CT, RI, and most cases receive care within 24 hours
There is a common, federally protected avenue for medication abortions
There are protections around miscarriages, such that you approx. cannot be investigated for fetal homicide if seeking medical care
Abortions are protected within (roughly) the first trimester, and states do not enforce any local laws to the contrary
There is no "substantive burden" to receive an abortion, such as: a multi-day waiting period; forced, medically unnecessary procedures like listening to the heartbeat; doctors being forced to read a script with medical misinformation
Wards of the state (such as foster kids, people in lockup) can reliably get access to abortion care