Whither the Budget Committee?

Ryan, RoJo, and a few others are now embarking on a joint committee budgeting assignment.

Pethkoukis posts an essay ending thus:

...Given that the average US debt-to-GDP ratio was 37% from 1957 through 2007, a better policy goal would be to immediately shift — via entitlement reform and pro-growth polices rather than more discretionary spending cuts — the debt-to-GDP ratio onto a downward trajectory back toward that 37% level, if not lower, over the next two decades....

Yes, "reform" may include SocSec taxation on incomes up to $235K rather than only $85+K.  So?