Complex animated SVG is fun to roll until you get into the weeds of SMIL and Safari bricks your phone for missing a leading 0 on a float or some random nonsense.
I think GP is suggesting that the idea the GGP encountered an SVG that bricked their iPhone (without being a specifically crafted exploit payload) is an extraordinary claim that would require extraordinary evidence.
GP was right. I was pretty sure your interpretation is correct, but I've seen enough things over the years that I was curious if there were any more details about actual bricking.