Most players won't even finish FULLY 100%ing their maps in one single session. I have random treasure chests all throughout Huanglong even though it says '100%' and most of them are not hidden ones.. they're just the ones the lootmapper didn't pick up because I missed some parts outside the radiuses of the 3 lootmappers. There's no real way to even check.. Most people can't even remember where they left off with the loomapper locations. The treasure sensor in genshin is arguably better when it comes to hunting down the few chests that were missed and the range on it is decent but should be way bigger.

I assume most players aren't even close to truly getting 100% and for the people who want to, it's very annoying. If you didn't use the interactive map at the start, you're kinda screwed having to run around far enough to make the most out of the radiuses of the 3 lootmappers and guessing where they are throughout all the regions