Not really. Most interchangeable lens cameras do not have a purely electronic shutter, it's a very new feature.

Those that do, do not have it as the default mode. There is also the electronic first curtain shutter, but that is way closer to a mechanical shutter than to an electronic shutter.

Pretty much every single camera that has interchangeable lenses, and thus can mount a telephoto objective sufficient for taking good pictures of helicopters has a mechanical shutter. From the Sony alpha series, to Nikon DSLRs, to the Canon EOS line, and so on.