Yikes! How dumb. Plus, you don't need the number plus the stars, that's redundant.
But I can understand that it's probably confusing for the regular traveler to see so many options and not really know what they're like.

I think something like "Good/Better/Best" might be...better, but with 5 "experiences" on some long-hauls now we'd need a few more adjectives. Bare/Satisfactory/Good/Better/Best?

I also wonder how they will slot in "Business Class" if you're, say, searching on JFK-CDG and there are AF options as well. I don't think those show under DeltaOne. Is DeltaOne more stars than business class?!