I think this is prudent when dealing with some extreme colors, because the rendering intents can only do so much to pull those colors into a decent sRGB-grade interpretation. And by ‘hand-craft’ I’m referring to building LUT color transforms with discontinuities appropriate to this specific task.
Matrix profiles , by definition, don’t have discontinuities; the rendering intent algorithm just follows a straight line from the original color toward the white point to some point within the destination gamut. It’s the decision with respect to where to stop in that journey that sometimes doesn’t look right…