Guiding principles are for quick guidance or judgements. You can’t solely rely on them or else you end up making inferior decisions or judgements. Maps are useful but they become outdated and inaccurate. The map is not the terrain.It's the principle. I know that people nowadays don't let principle bother them, but the fact that Apple still, in good conscious, puts 8GB RAM or 256GB SSD in a relatively expensive computer is them making a fool of anyone who buys it. Especially considering that it would cost Apple only a few dollars to put an extra 8GB RAM or an extra NAND SSD chip but then they don't get that $400 pure upgrade profit.
On principle alone, neither do I like it, but I’m able to then take in other related information and update my judgement; primarily target customer and their use case and how storage speed factors into performance bottlenecks.
That is why my judgement on M2 Air 256 GB drive is it’s a non issue, but my judgement on M2 Pro MacBook Pro is less understanding because it’s more likely the target user of a 512 GB drive on a 14/16-inch MacBook Pro is looking for storage performance (Eg. Video editor). It’s more than just principles that we have to consider or rely on when assessing situations or complexities.