Again, why does that matter? Whether it be phones, televisions, appliances, furniture or cars, consumer goods are often "discounted" in some way. That doesn't mean they don't or shouldn’t still have different retail prices and price points.
Discounting is irrelevant to whether Apple or any other phone manufacturer priced a phone at $299, $429, $599, $999, $1,299 or whatever.
Inflation was part of it but Apple likely also didn't want to continue to offer such an archaic product. The iPhone SE 3 was based on the iPhone 8 which dated back to 2017, and had a chip that dated back to 2021. They felt it was time to give their entry phone a serious update/upgrade including eliminating the small 64GB storage option. The 16e has increased RAM, better camera setup, better chip, better modem, better battery, increased max brightness, super retina XDR display, Apple Intelligence, emergency SOS via satellite, crash detection, Dolby Vision, Dolby Atmos, ceramic shield, greater water resistance, etc. all for just $120 (with same storage) more than the old SE. A pretty good value for an iPhone IMO.