I'm quite happy if the registration fee is substantial. Yes it will irritate all of us that are committed to having a drone and flying it, but it might serve to put off some of the muppets. The ones that get a drone for Christmas and even though they can barely read the word 'yaw', by New Year's Day they've buzzed the town centre, their mates in the pub, the local airport, the nuclear power station, and got it stuck in a tree outside their favourite soccer team's stadium.
That said, I do think they're going about this the wrong way. I'll say right here and now if the Government wants a copy of my flight records I'm quite happy for DJI to give it to them. There really isn't a privacy concern here. If you're standing in a public place, flying a device you can hear from half a mile away and has a camera stuck on the front of it, then demanding privacy for your flight record is a bit rich.