No, you got code clarity wrong. Code clarity in ABAP means using System Hungarian Notation and it baffles me that almost every ABAP programmer I talk to think it's not redudant to use a command such as READ TABLE on a variable called GT_VBAK(for non-abapers, G for global variable, T for table).
The only advantage that I see is that for the most part, every program will look almost the same regarding standard SAP tables.
At some clients you have to sign their development guidelines, and you have no choice but to use that notation. The rule at big enterprises is that new rules get added, but old, even archaic rules seldom get removed.
The only advantage that I see is that for the most part, every program will look almost the same regarding standard SAP tables.