Amelia the Level Zero Hero by MelasDelta

I don't really agree - whilst I understand that it could be boring to many, I'd argue some of your points are unfavorable to the novel.

Firstly, I don't think the comedy is meant to be the hook (there's frankly not much of it, so if it is then it's failing). I think the hook is the character interactions. I would of already dropped it if not for Noele. It's primarily a slice of life, not a comedy.

Secondly, to say she rejected the system "for some reason" is disingenuous, as it's pretty clear that the reason she rejects it is because the only class she was offered would make her the protector of the system for the rest of her life, which she doesn't want.

Also, she isn't really stupid, just bored. Sure she doesn't care about things, but the reason she doesn't take advantage of her strength is because she doesn't want the responsibility and bother it would bring her. Lastly, she wasn't essentially homeless since she had accommodation at an inn and has plenty of money to pay for it indefinitely.

Overall, I agree that it's well written, and agree to some degree that the MC is uninteresting at times, but I think the novel as a whole is interesting enough as long as you don't mind a fair bit of slice of life.
Edit: I forgot to mention; when you talk about her not being able to sell burgers, you say it as a bad thing, but really it's just good worldbuilding. Within that world, it's common knowledge that actual skill directly relates to system skill level, so someone having 0 levels must obviously be bad at that thing. It may be annoying as a reader, but it is a sign of consistent logic in worldbuilding, even if it the world's common knowledge is flawed.