While such "in-a-box" products are obviously limited & biased, they are a tremendously useful starting point for people who want to begin an endeavor but don't know where to start, don't want to get bogged down in selecting basic tools/services they don't yet understand, and don't yet know even the "well anyone who knows anything about XYZ knows you need at least a ABC and a PDQ" stuff.
Of course the contents are imperfect. BUT IT'S A START. Give someone what they need for a sensible starting point, then they can soon learn what they need to head in the direction they decide to go (after they know enough to understand what the options really are).