It's really not. Never mind the fact that MrDrNose severely nerfed the game after it was perfectly advanced and beatable anyway - which really helped with the horror aspect, mind you - it's like bribing a teacher to get good grades. Sure, you passed the test, but what did you really accomplish? Even if you bribe all of the teachers and professors in your supposed pursuits of study, when the time comes for you to actually perform tasks and use your supposed "knowledge", there will be times when all you know what to do is bribe when it's an option that doesn't work.
It's the same with AEWVS. Sure, it makes the game easier, but did you really earn that assistance just for playing? Even if that helps you progress faster, it just makes the game less interesting and appreciable. It's a bit like playing Temple Run. At some point, the challenge just stops, and all it does is make you continue to push forward in order to get a high number. It rewards you by waiting.
Without the Store, each attempt is initially perfectly credible and beatable, and you won't know when you succeed, but when you do, you can congratulate yourself for finally persevering and being skilled enough to beat the game or level. With it, you will probably estimate exactly the amount of hours it takes you to grind all the DCoins you need, and even if you were listening to a podcast or watching a TV show, your time could be better spent doing something like making sprites while listening. Farming is a cheap way to progress, and doesn't really show that you have to try to do anything other than waste your precious time.
You didn't really beat the level. You just gave yourself access to the rest of the game. Acquirements are unrewarding when you get them in such a lousy way.
I think that usage of lootboxes should have at least the same detrimental effect as having the overworld wait for you while using notebooks: you can't get DCoins or achievements. But nobody will listen unless you put it back at the top/bottom of an AEWVS feed LOL