MN 137 - Directed only to Stream Entrants (and beyond)?

>"And what are the six kinds of renunciation joy? The joy that arises when — experiencing the inconstancy of those very forms, their change, fading, & cessation — one sees with right discernment as it actually is that all forms, past or present, are inconstant, stressful, subject to change: That is called renunciation joy. (Similarly with sounds, smells, tastes, tactile sensations, & ideas.) Is this achieved by intellectual pondering about the six senses (and meditative insight into the three characteristics) or just pondering alone? I'd say the former, but then this Sutta is primarily directed towards Stream Entrants, no?