FF7R sold 5 million. A remake of Final Fantasy 7 Remake, launching in the middle of a pandemic that boosted game sales across the board, on a console that had at that point sold 110 million units and had record software sales, sold 5 million. This was in spite of a record breaking launch, where it sold 3.5 million. After that, sales just dropped.
Because the quality, while enough to make it a moderate success, could not sustain long term success. Persona 5 and Nier Automata both started with modest sales compared to FF7R (both sold ~1.5 million in launch month), but then both just kept selling and selling and selling and selling and selling over the long term because of their amazing quality that contributed to word of mouth, and now both are ~8 million sellers, which is not only very literally more than 5x what they launched at, but also more than the long awaited remake of Final Fantasy 7.
Quality absolutely matters. That's my point.