I feel like there are two things... one, do Reform voters even understand that Digital ID is a response to immigration? It's not clear to me that they even do.
Two, obviously immigration is not the issue. As I understand, Starmer is going to attempt to mount a serious counter-narrative to Farage. I really hope that his answer will not be "look, we hate immigrants too!" They tried that a few months ago, didn't they? The whole "island of strangers" Enoch Powell thing. I hope that that was as bad as it gets.