That's a very polite way of saying that may AAA developers/publishers can't put together a quality game for shit these days even if they tried, especially since the AAA industry has pivoted towards "monetization" and "engagement" and not actually producing anything of value. That a game is produced is more of a tangential side effect of their business at this point.
It's about volume * unit price. Just because AAA games and indie games do not have an order of magnitude difference in unit price, they definitely have several orders of magnitude difference in volume.