Who needs a simple lineup? You’re not providing a logical reason for the simplicity. Just for simplicity’s sake?
There’s still a prior generation MBA for sale, and the 13” MBP with TouchBar. Should Apple eliminate those from the lineup for the sake of simplicity? No, of course not. They offer enticing price points. Again, options at different price points are good for consumers.
If the product is going to sell, they’re going to make it. Let Apple experiment with new products. It’s what they do. Let their designers rise to the occasion and make an ultra portable again. It was a cool device back in 2015, and existed alongside the MBA and MBP, and we should look forward to what it could look like in 2023.