Other industries must limit the noise they make; but aircraft, thanks to an obscure clause in the 1949 Civil Aviation Act, are exempt.
You might have noted that there are restrictions on night flights at London airports. Because, you know, noise. Further, the FAA has been imposing ever greater limits on engine noise since the 1960s. And given the weight of the US in the global aviation industry everyone does manufacture to those standards.
It’s simply not true that there’s no regulation of aircraft noise.