No surprises here. Just like the lockdown on iPhone screen and part replacements, Macbooks suffer from the same Apple’s anti-repair and anti-consumer bullshit. Battery glued, ssd soldered in and can’t even swap parts with other official parts. 6000$ laptop and you don’t even own it.
The difference in performance between soldered on integrated RAM and regular RAM is huge actually. Like night and day - that’s why Apple and co started doing it.