this HRC supporter's point disagrees with you

http://www.democraticunderground.com/?com=view_post&forum=1251&pid=2159856

I get that you may also not recognize the reality of energized people scare establishment folks, on both sides, in each party

That article isn't 'ignoring' nor 'overestimating' his power to influence

"Sanders has been pulling Clinton to the left throughout the campaign, on everything from trade to the environment. The crafting of the platform offers a rare chance to enshrine many of those changes and Sanders and his supporters are ready for battle.
Sanders won a key concession from the Democratic National Committee last month securing five seats on the 15-member panel writing the platform (Clinton won six seats and DNC Chairwoman Debbie Wasserman Schultz picked four members.)
One of the first steps will come Wednesday and Thursday when the DNC's platform-drafting committee meets in Washington to hear testimony on possible changes."


This bit 'he will need additional support to get what he wants.' is where you continue to be dismissive of the large contingent of energized supporters, those that came in huge droves to Bernie's rallies... the ones HRC supporters here were dismissive of...

Wanna bet that DEM establishment are concerned about those folks?

Proof is in the linked HRC supporters post, the facts of that 'concern' are real, the real battle is about to begin