I think it's unfair to call Ladybird vaporware this early. There's nothing suspicious about their development schedule for the scope of the thing they're trying to build.
I agree I don't think it should be in the alternative browser discussion until they do produce something, however.
And also, I think there's a positive to say about Lady Bird here, which is that in the event they succeed, that's as much a narrative about an extraordinarily talented and committed developer, And if they're able to put forward a credible browser, it will be a soaring achievement for them. Not necessarily something I would expect as a kind of default status quo expectation.
I think if you get these alternative from the ground up browsers, you get extremely limited things like Net Surf, noble efforts that I respect, but not going against the billions of dollars Google can throw into modern browser development.
I agree I don't think it should be in the alternative browser discussion until they do produce something, however.