Halo 3 had paid DLC maps. So many of us are complaining about REQs that you don’t have to pay for (save a few armors). Can you imagine if 343 made us pay for any of the new maps we’ve gotten?
Personally, I’m grateful for 343 and I’ve even thrown them some money for the Warzone and Arena premium packs. Not telling anyone what they should or shouldn’t be upset about, just giving my opinion as a grown adult and veteran halo fan who doesn’t complain about modes of entertainment.