The Quest 2 panels were always a weird choice to me. They were higher resolution than the Quest 1, but they lost the IPD adjustment and they were LCD instead of OLED, which was a MASSIVE downgrade. Making the Quest 3S with the same screens make sense from an economical standpoint, they can reuse the tooling they already had while producing less SKUs (since both the 3 and 3S are using the same internals), but since the Quest 2 was already mediocre on that aspect, it doesn't make practical sense, the new lenses are the main advantage of the Quest 3, the power difference still doesn't really do much right now (there's still not a lot of games that were updated to take advantage of it) and if you're using it on a PC, it doesn't change anything at all.
At $300, it's a lot cheaper than the Quest 3, but I feel like it's still not cheap enough to bring new people, those who already have the Quest 2 don't have a strong enough reason to upgrade and those who still don't have one and want it will probably spend the extra for the regular 3 if they're serious about it. It's always good to bring the price down, but it feels like they did too many sacrifices that are just not worth it, it's really just for them to stop producing the Quest 2.