There are lots of things in this world that can kill you, and you’ll never be inoculated against all of them. 100% death rate does not mean 100% infection rate.
Discussion
Why wear a seatbelt when there are so many other things that can kill you?
At least we can say that rabies vaccines aren’t a scam. In order to be sold in the United States, they have to be at least 88% effective in challenge trials. Going from nearly zero chance of survival to 88% is a big deal. And rabies vaccines do prevent spread.
https://todaysveterinarypractice.com/preventive-medicine/rabies-vaccination-in-dogs/