I'd compare the flavor to Sriacha Ketchup: sure, it's a bit Basic, but sometimes one just wants something slathered in the stuff.
Perfect! I loathe ketchup and just thinking about the flavor makes me kinda gag. Mustard, BBQ, ranch, salsa, etc. are all fine, but any ketchup will ruin my food. (And, yes, I'm serious. Ketchup is just gross.)
So, to take your metaphor, if I go out for a burger, it may come with ketchup, no matter what I say to them. Sometimes, that's no big deal because it's trapped between the cheese and the lettuce and all comes off just by pulling the lettuce (not like lettuce has any flavor, anyway). Whatever is left is easily overwhelmed by the other flavors. Other times, the ketchup is squirted onto the bun and left to sit while everyone else's food finishes. It soaks in and mostly saturates the bun -- and may even trickle through the tomato, pickles, onions, etc., coating everything. There really isn't any way to save the burger, at that point, short of tearing it apart and rebuilding it, replacing the contaminated bits.
Some adventures (PotA) just have the Realms between the lettuce and the cheese. Others (ToD) have it all soaked in. If you like ketchup, or just aren't picky about what goes on your burger, it's really not a big deal. Meanwhile, I'm trying to figure out whether it's worth wiping everything off on a napkin (which is going to sit on the table while I eat the burger -- gross) and how much bacon it's going to take to cover up the remnants of the ketchup.
By comparison, 1E modules were a lot more like a slab of ground beef in a dry bun. You could put whatever you wanted on it, but coming with even cheese was considered pretty flavorful. That's got it's own set of issues, but it's not the same thing.