I'm a little excited about old vintage headphone i got today, even though the economic design are not the best but their driver are coating with diamond dust, it's something you don't see often.
Some older headphone use paper diaphragm and probably my favorite. Even though it isn't the best material but it sound is great(for me).
Most modern headphone (even speaker) probably use aluminum diaphragm by now. Of course. There is nothing wrong with it but i find that unattractive when you have a lot of them made from the same material.
The argument doesn't make as much sense on a MacBook Pro, where you might be doing something like...using a DAW, where you could need gigabytes of samples and synthesizers playing at the exact same time. Also, that 8GB is shared with the GPU, which further eats into it.
There is definitely some truth to it, though it's being stretched. I use an M1 Pro with 16GB at work, and it's incredibly snappy even when I'm running heavy Docker containers that easily eat over half of that (plus IntelliJ IDEA, Slack, Chrome, Spotify, etc). My older Intel Mac I have at home wouldn't handle that so gracefully, nor would an off the shelf Windows machine with a similar amount of RAM.
We're entering another phase where specs commonly used to compare machines are less distinct than they used to be (like when clock speed used to be a big deal, then multiple cores and higher IPCs changed that). System-on-Chip is a game changer, raw core count is less of a differentiator than it was a decade ago, etc.. RAM on the SoC, more tightly integrated with the CPU, instead of on the motherboard is another one of those things. It's hard to quantify and compare, but it has definite upsides.