I've been doing my own sharpening since early teenage years so at 53 now it's been quite a while. I've used multiple types of sharpening tools, but never anything powered on a knife.
Have sharpened tools and blades using tools mant times over the years, hand and electric planer blades, drill bits, chisels, axes and hatchets, hoes, mattocks, pickaxes, machetes, ditch bank blades, lawn mower blades, chainsaw chains, etc. It takes various equipment for sharpening these types of tools; files, grinders, belt sanders, various stones of multiple sizes and grits. If you use tools more than a little bit you need to learn how to maintain them and sharpening is part of routine maintenance required.