The thing is 100% of this demographic have children and 100% of this demographic want these attacks to stop.
Banning this crossbreed is going to have exactly the same impact as banning the pitbull crosses did on dog attacks which is none at all. Dog attacks are rising steadily and have been rising steadily since well before we banned a dog based on a set of arbitrary measurements.
I fully understand that these dogs are physically stronger and heavier than a lot of other breeds but even if we banned them all - even if we banned everything but toy breeds - idiots who want big bad dogs know that if they take the biggest baddest chihuahua they can find and breed it with the next biggest baddest chihuahua they can find they will, within a few generations, end up with a dog that is significantly bigger than a regular chihuahua and more aggressive.
They don't understand the science behind it, looking at the state of some of them around here I doubt they fully understand how to find their own arsehole, but they know breeding two big bad dogs equals big bad baby dogs.
It actually only takes about 6 generations of this type of selective breeding before you end up with something that looks nothing like the breed you started with. Obviously, it will take more than 6 generations to breed a Chi that is the size of a pitbull but it is possible and they can do this with all breeds no matter how fluffy and family-friendly the original breed is. And they will do it because they are idiots who need an aggressive animal to make them feel hard.
The only way to reduce attacks is to reduce the number of idiots who own dogs via dog licensing and controlled breeding.