Domain knowledge should be available in the team, not necessarily every member of the team. Together with good communication this solves the issue on a 80/20 basis.
The exception is of course if you work solo, in which case it does indeed become a full stack problem of sorts. Individuals who can pull this of can make significant impact.
The exception is of course if you work solo, in which case it does indeed become a full stack problem of sorts. Individuals who can pull this of can make significant impact.