Indeed - just look at Kubica's 300 Kph crash in Canada[1] - that would more than likely not have been survivable in the early to mid 90's.

The Hans device, protective monocoque, wheel tethers and other incremental improvements are nothing short of stunning, and though he has many legitimate gripes against him, Max Moseley was key in pushing this forward in his time as head of the FIA.

[1] https://www.youtube.com/watch?v=AtrzvwayniM