SSD can be resoldered and that service is actually becoming popular and inexpensive. It's not just MacBooks, nearly all laptops have SSD and RAM soldered. This will become a totally normal thing in a few years from now.
Soldered storage is extremely uncommon for laptops not from Apple. You pretty much only find it in very low-end Chromebook type hardware that's using eMMC for cost reasons, and a small fraction of more expensive Qualcomm-based laptops that use UFS for no good reason. All mainstream PC laptops use M.2 NVMe storage.
> > It's not just MacBooks, nearly all laptops have SSD and RAM soldered
> That's simply a lie. No other laptop have soldered SSD. An increasing number do have soldered RAM.
That's simply a lie. Pretty much all laptops using eMMC or eUFS for storage are soldered directly to the mainboard. These are often budget devices and many are things like x86-based tablets or chromebooks but there are models that are very much laptops. I do concede I am unaware of any non-apple laptops with directly soldered NVMe storage, but your claim that no other laptop have soldered SSD is patently false.
I think it's a little disingenuous to try to compare high/er end Apple laptops with soldered storage to $2-300 Chromebooks and budget devices with soldered eMMC (which is much more like a CF/SD card than anything else) in your argument in the first place.
As you acknowledge. When you look at actual competitors to Apple, you're forced to acknowledge that yup, no other manufacturer solders storage.
But yes, with due pedantry, the statement that "no other laptop has a soldered SSD" is technically wrong.
You could get into additional debates on whether eMMC and eUFS would map to most people's understanding of "SSD", but...
Neither the ram nor the ssd is on chip. The ram is on package, the ssd is on board.
On chip means literally on top of the silicon, like how AMD X3D cpus mount the SRAM chip. On modern Apple devices the ram is mounted on the organic package substrate. The difference is significant, and it's shitty that Apple outright lied about it.
I think that particular definition of "on chip" is entirely your invention. I've usually seen it broadly used for anything on-package, whether it's on-die or on a separate die within the same package.
"On chip" definitely does not have much if any history of referring specifically to stacked dies with TSVs, because that has been a very niche packaging technique until recently, and "on chip" is a much more broadly used term.
SSD can be resoldered and that service is actually becoming popular and inexpensive. It's not just MacBooks, nearly all laptops have SSD and RAM soldered. This will become a totally normal thing in a few years from now.