Tailgates are always stolen, it's been happening forever and there was a rise even on the GEN1's. I've tried two different ones and the McGard hands down in the best. The other one I tried was more like a hose clamp but it will tear up the paint. The McGard is protected by a plastic guard and for the last 2+ years and heavy off-roading, it hasn't scratched the paint up. And think again if locking the tailgate works. Thieves have been known to get in the bed and unscrew the panel to pull the levers to open the tailgate and take it. And most tonneau covers can be broken into with a long crowbar.
A tailgate with camera is over $2,000 and can be sold on craigslist quickly for $800. Some legitimate junkyards will refuse to take them, knowing that someone trying to sell just that is most likely stolen.