A fat bike is a bike with >3.8" tires and is not necessarily an e-bike nor an issue. Some people use them in the snow, sand or trail without issues to anyone and I have occasionally also used mine in the city because it was more comfortable to ride at slow speed than my road bike and stops on a dime thanks to the available grip.
There are a number of trendy aliexpress quality e-bikes that are also using fat tires and are ridden by idiots but the problem is not fat bikes per se. The problem is idiots on unrestricted/modded e-bikes. Ban fat bikes and they will use unrestricted e-bikes with different tires and the problem will be the same.
Yeah that's kind of the point, new rules will often not solve things, but will just move the issue. The underlying issue with certain groups in society & not enforcing will remain.
There are a number of trendy aliexpress quality e-bikes that are also using fat tires and are ridden by idiots but the problem is not fat bikes per se. The problem is idiots on unrestricted/modded e-bikes. Ban fat bikes and they will use unrestricted e-bikes with different tires and the problem will be the same.