What I meant by "giving traits in bunches" was getting many of the starters hidden traits coming out in a single breeding, as I hope the supporting examples I gave illustrated. A starter can hide all 9 traits, but the fact is even in this situation, there are many times when you will only get a small number of traits showing up at once.
Your point about the appearance of fewer traits being a result of the breeding process itself is factually correct; however, in my KC "theology" the "starter gods" are demigods in the breeding pantheon hehe.