Removable SSDs aren't just for upgradability but for repairability. To ensure your shiny expensive laptop doesn't become e-waste the minute your SSD NAND (which is a wearable part) inevitably dies.

I agree 100%, I'm just saying if you want Apple, you can't have that regardless how much you're willing to pay (though if you paid them $10B they'd probably bend and design it this way, everybody has a number.)