Yes, but an important part of that context is that electric car fires also burn longer and hotter and take significantly more effort to put out. Too little water can actually make the fire worse.

Annecdotally, my recollection from other articles is that electric cars do in fact catch on fire less often. But it also seems like they may be more difficult to deal with. This may change as EV's become more mainstream & fire departments adapt: Graphite may be effective in putting out these fires, and maybe it will become a common tool in fire departments.

For the time being, rare or not, they post a much larger problem to deal with when they do occur.