Comment by ashkankiani

I think you missed the point of their comment. The point is they are reducing features (marginal cost difference for them) to provide a worse experience for a cheaper model. I'm pretty sure it's less complicated to have a shared manufacturing process with fewer SKUs than to have two separate displays (if they're even different and not just software locked).

Do you think they couldn't add a refresh rate control to the device if you wanted to have lower battery? They already have variable refresh rate implemented, a much harder problem.

I remember the age of when Intel used to lock down hardware multipliers for overclocking behind the K versions, and GPUs did too. This is a well known practice, and Apple is not above it.