You're right—standard number formatting (like 1,000 or 1,000,000.50) works great for representing values. But split.style isn’t about number formatting in the traditional sense. It’s more about improving readability and memorability for long numeric strings—like bank account numbers, document IDs, or OTPs—especially in situations where copy-paste isn't possible and manual entry is error-prone.

It’s similar in spirit to how we format phone numbers: not for mathematical value, but for human readability.