One thing people are trying to convery every time this question comes up is that "7nm" is really just a marketing number, it's not tied to any particular physic

One thing people are trying to convery every time this question comes up is that "7nm" is really just a marketing number, it's not tied to any particular physical dimension, and it's not how small the knife is able to cut. The knife does get better, it's just not something that the Xnm node names measure directly.