ATC won't issue altitude alerts for flight following? In general, not in this case.
We don't get MSAW alerts (low altitude alerts) on VFR aircraft, only Collision Alerts.
Fun fact you might like, MSAW doesn't only detect proximity but descent rate. You could be above the MVA but the computer thinks your descent rate is going to put you into the ground, so it tells us to tell you.
We can also skip giving the alert, if in our judgement no actual risk occurs. Which for radar controllers, we can't see *expletive deleted*it, we give all msaw alerts. Tower can actually see you and will often choose not to give the alert.