Why are Nitro RC Boats on the verge of being banned?

Across the United States of America, there is widespread concern on the use of Nitro RC Boats, and how they increase noise pollution. Yes, it is an agreed concern in various quarters of the society, which probably needs a soon enough fix. The suggested remedies include a probable ban on Nitro RC Boats on waterways in populated neighborhoods. But really, one feels to ask if banning would really help the cause at all. There are many sources of noise pollution, which really aren’t banned, so why do it with Nitro RC Boats? This is a hot question, at least here.