The problem with that is owners are generally unaware of that hidden feature. I remember hearing about someone dying in a Tesla because they couldn't get out, but they never attempted to use the manual handle. There was a PSA talking about that handle running for a while after that.
On that note, a buddy and I got locked in a shaved hot rod years ago because of a blown fuse. I haven't been a fan of shaved, electric doors since crawling through that trunk in a parking lot.