@ Vidqun
This is the commonly held position of jw teaching that "men" have been polluting the earth since 1914, whereas the verse in Revelation 11:18 speaks about a specific destruction taking place during the last 3 1/2 years.
Also my reasoning is based on the fact that the verse divides humans in groups : Nations (=unbelievers) and the holy ones(=believers).The way the verse is structured leaves the "destroyers of the earth" as a 3rd distinct group.
Interestingly , the concept of the fallen angels destroying the earth during the End Times has been popularised by films and books in recent years. I recommend you watch "Captive State" on Amazon Prime or "Colony".
(* yes I'm a firm believer that the powers to be are familiarising us now using these media about these future destressing events now.
And yes, Revelation is sci-fi beyond your imagination )