Yeh I get that. Its treated as if its an upgrade - a sales upsell to a different unit I guess, rather than an upgrade to the literal unit the customer is receiving. Yep objectionable all round.
My point is you cannot effectively upgrade after the fact. You have to buy a whole new device.
There’s reasons behind this. LPDDR IIRC works most efficiently when it’s closer to the CPU than what dimms would allow for.
Boosts speed and lowers the power requirements.
It also incentivizes people to buy larger SKUs than they originally wanted, which, bluntly, is probably the main driver for going that direction… I’m just saying that there’s technical reasons too
The technical benefits are honestly quite overblown. The M-series didn’t get the massive speed lift because it moved to soldered RAM near the CPU, it got the massive speed lift because it doesn’t have to copy stuff between the CPU and GPU, the proximity to the CPU is a pretty modest improvement. So they could’ve gotten 95% of the benefit while still offering socketed RAM, but they decided not to, probably to drive prices up.