In the new world, normalised interviews are going away, because business value is not normalized. This means that domain based interviewing and signals are going to make a comeback.

It would make sense to build your career in a single domain, since your built up expertize will transfer to other companies within that domain.

Far fewer switches will happen for seniors across domains.

I choose to argue the complete inverse. In the age of AI there is increasing value on being a reasonably well rounded generalist. Exposure to different paradigms and possibilities matters significantly more than depth within a single purview.

From a career risk perspective, this is also the right answer. Domains disappear, though they frequently morph. Cross domain knowledge allows the individual to apply lessons and patterns they've learned elsewhere.