Old wisdom says that the first step on the road to recovery is admitting that you have a problem. With this statement, Reince is doing the exact opposite of admitting the GOP has a problem with it's message of anti-science nuttery, climate denial, anti-woman misogyny, religious extremism, and economic policy ignorance. Quite the opposite in fact, Reince is saying the biggest challenge facing the GOP is doing a better ob of conveying their policies and message to the masses.
My prediction is that if and when the GOP does manage to somehow get their message out to all the voters across the country and educate them all on the policies and principals that the GOP espouses, then the Republican party will fall even further into oblivion. If anything, the GOP's problem is not enough marketing, its all the free marketing that their political enemies are more than willing to do for them.