Imaro
Legend
It's ridiculous to think that the PCs are some sort of mighty cosmic encounter attractors that cause multiple encounters a day to spontaneously happen where they are at the moment. Said encounters somehow don't happen anywhere else in the world. Rather, the PCs encounter so many creatures daily, because there are craptons of creatures all over the world and that's how many they encounter that day.
Strangely enough in almost all of the fiction that D&D is based upon... that's exactly the case. When you read a Conan story or an Elric story... even LotR and the Hobbit the numerous encounters the protagonists are having with fell beasts and monsters are not representative of what is happening to the populace at large. It would be a ridiculous world if it was... and yet the protagonists regularly face everything from ringwraiths and orcs to Chaos gods and primordial proto-people in these stories
That leaves DMs who actually care about consistency to have to figure out how to fix the problem. Since there are so many dangerous creatures all over the world, there would have to be tons of adventurers all over the world to combat them. Of course, that can rub those who like PCs to be super special the wrong way. The only other way I can think of to keep things consistent without upping the adventurer population, is to lower the encounters that happen daily and thereby lower the deadliness around the world.
No they are creating a problem because of how they've chosen to use the encounter rules as worldbuilding mechanics when they are not. The encounter rules are just that... rules to tell you how to roughly balance an encounter for PC's... not a calculator for the number of monsters inhabiting a world.
Again rarely if ever in the fiction that D&D is derived from are there a crapton of monsters decimating civilizations and killing non-adveturers by the droves as opposed to being stragely enough mostly encountered and battled by the protagonists seeking out adventure in the stories...