No, these are typically pretty easy to install- even for those that don’t really know their way around a toolbox. The designs that are a little more difficult to install simply require that you use a Phillips head screwdriver to tighten a few bolts around the handlebars.
The easier options out there on the market that we have seen don’t even require that you use slip it around the handlebars and then tighten it up by hand. It is important to note that if you are worried about scratching the paint on your bicycle, opt for a design that has a mount that is made from ABS plastic rather than metal.