One of the very first things I did when I picked up KiCAD for the first time was to draft a symbol or two. OK, not really complicated symbols, but I had switched between PCB layout programs several times over the years and I learned that "library work" - drafting symbols and footprints - could consume 75% or more of the total effort on even a low- or moderate complexity project. I knew that learning to create symbols and footprints was NOT something I could put off until I had a rainy Friday afternoon without much happening in the Lab! I thought the KiCAD drawing tools were only a little more frustrating than other programs I had switched to. (Getting accustomed to the library procedures, and the libraries' basic architecture, was another matter!)
As for the zig-zag resistor in particular, we old fogeys are not above grabbing somebody else's work for our own benefit. Too many times we have re-invented a wheel only to discover that we forgot to round over all of the corners on our wheel. We keep our eyes open for somebody else's wheel that seems to be rolling along smoothly. Just be sure to carry a tire gauge - no sense in stealing somebody's wheel if it has a slow leak that could leave you flat. Old age and treachery triumphs over youth and enthusiasm, as they say.