I think this is often overstated or misstated.
First, many FL AP’s belong to people in FL who are not in “day trip” distance unless they want to do something nuts like drive up for dinner and drive right back home late at night. All of Fort Lauderdale/West Palm to the Keys and the panhandle, Naples, etc.
Second, when you don’t have to buy park tickets every time, you can spend that money on $200 dinners for two instead of $50 dinners. You can spend it on tours/upcharges. You can upgrade your hotel.
Also, if I buy a 3 day ticket, I’m going once for 3 days, and I’ll have less money on that trip after buying those tickets.
But when I buy an AP, I want to “get my money’s worth” and may take several trips like that. I’ve seen everything so I appreciate certain upcharges and splurges.
Disney makes a lot more money on me when I have an AP vs when I don’t!
YMMV.