No, there was constant low-level warfare for 1600 years which even directly led to the Hobbits fleeing their original home. It’s also for example the reason why

No, there was constant low-level warfare for 1600 years which even directly led to the Hobbits fleeing their original home. It’s also for example the reason why the troll-wastes are desolate. The major wars and disasters were on top of that. It’s 1600 years of an active, organizing intelligence whittling the West away and which saw the _destruction_ of multiple major kingdoms and settlements prior to the beginning of the story. The people of Arnor were nearly exterminated as a result of the Witch-King, for example. These were not wars like medieval wars. They were wars that entailed abject slavery or genocide for the losers.