I am that person. The AppleCard gives you the ability to add it to the rotation.
We both know 5% cards and the categories offered are few and far between and have almost no benefit besides the few 5% categories. You can't get 4% on "average" unless you buy almost nothing and only buy 5% rewarded stuff (hugely limited and capped). You may be able to get something close to 2.5% on average. The best of the best rewards are 3% on travel, dining, and have no limits. The higher than 3% rewards are more limited scope and almost always have a cap, such as the Freedom 5% categories (limited to $1500).
I have a Chase Reserve, Freedom, and Freedom Unlimited. The Apple Card fits in by offering 2% on Apple Pay and 3% at Apple, now Walgreens. It will only get better as more users have the card. They want to drive transactions.
Just an FYI, you can get multiple Freedom cards by signing up for other Chase cards and then contacting them to product change them into Freedom cards. Between my wife and I we have 4 Freedom cards. Useful for those times when you can really max out a category.