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.
I doubt the difference in performance is that significant. If it was 50% faster then sure. But odds are it’s something like 3% speed difference. Same for the storage, I doubt that apple’s proprietary interface is that much faster than a regular high quality nvme, definitely not enough to justify the multiple that they’re charging for it compared to an off-the-shelf nvme.
Erm yeah it’s more than 50% faster in bandwidth for M2 Max, because it has more memory channels than two SODIMMs would allow for. It’s specifically at least twice as fast. People upvoting this are showing their ignorance here about Apple hardware.
The storage isn’t particularly fast so that part I believe.