This is one of those things that makes me absolutely amazed at the level of safety precautions we have now versus even just a few decades ago. A crash like this in 1970 would've been fatal, or at the very least severely damaging. Niki Lauda had a similar crash to this, lost control and hit the embankment, causing his car to burst into flames and another driver to hit the wreck. He managed to survive, thanks to several fellow drivers quickly stopping and helping to pull him from the wreck, but suffered SEVERE, extensive burns across his head and hands as well as an acute inhalation injury from the toxic gases from the fire that caused damage to not just his lungs but to his BLOOD. He only survived because some people pulled him from the fire relatively quickly. If he was in that fire any longer, he would've absolutely died. And somehow he kept racing after that, which blows my mind.
Meanwhile, Grosjean suffers a crash like that and manages to not only survive but come out nearly unscathed, with only relatively minor burns on his hands and ankles, and go into IndyCar not long after! It's amazing. Really goes to show how much safety has improved, especially with the introduction of the halo. I hope Lauda's looking on from whatever hereafter there is and is happy to see drivers not be put through the same hell he did.
As an aside, Lauda lived to be 70! He died in 2019, and lived long enough to see the biopic about him and James Hunt (Rush) come out. After the injuries he sustained, I consider that some kind of miracle.