I am not one to assert purity of technique nor insist that we must all adopt the ethics of photojournalism; I think one has to do whatever is necessary to make the desired statement.
But... my points are that (1) if you can do most of your work "in camera" then your darkroom work will be much less laborious, so looking for the light you need is essential; and (2) poorly executed, d&b leads to some unnatural effects, so again, having a sense of how to wait for and use the available light is very helpful.
D&b can produce some really terrible things, I know because I've made a few myself. An example is a bank of perfectly gentle clouds that have been artificially made to look ominous, and so forth. That's one d&b cliche that I cannot take! Expert printers like Mr. Carnie don't commit such offenses, of course