Well, you aren't technically wrong here, but I disagree with the sentiment. The RNC leveraged a the same kind of data used by the Obama team in '12 to squeak out an Electoral College win in `16.
I think it's easy to get overly ambitious with civic tech and deliver expensive garbage. However, when people stay focused and deliver then I think the results speak for themselves. While the '12 and '16 elections didn't turn on candidates tech strategies alone, it's clear that they contributed.