I've read many of the threads on here about APs. ... I just don't get why they stopped selling them?
The short answer to why they stopped selling APs at WDW is because they put a cap on the number they would distribute and by November 21, 2021, they sold out.
Here's a quote from Bob Chapek, Disney CEO, to The Hollywood Reported at the
D23 on September 10, 2022, talking about the cap on APs distributed.
"We love all our fans equally. We love the superfans, obviously. But we also like the fans that don’t have the same expression of their fandom. We want to make sure that our superfans who love to come with annual passes and use [the parks] as their personal playground — we love that. We celebrate that. ... We didn’t have a reservation system and we didn’t control the number of annual passes we distributed and frankly, the annual pass as a value was so great that people were literally coming all the time and the accessibility of the park was unlimited to them ... . ... What we will not bend on is giving somebody a less than stellar experience in the parks because we jammed too many people in there. If we’re going to have that foundational rule, you have to start balancing who you let in. … "[Emphasis added.] (Chapek interview with the Hollywood Reporter, 9-10-22)
When people do not renew, their passes go back into Disney inventory. Disney will not open new annual pass sales until they have enough in inventory to sustain new sales for a reasonable period of time. That's the short answer.
The reason they put a cap on the number of APs distributed is to get a better attendance mix so high profit day ticket guests would have opportunities to come and the number of passholders was limited. When the California lawsuit was filed, Disney had a choice to make. Either allow unlimited sales of APs and throttle the number of passholders in the parks through the park reservation system -- deliberately making too few reservations available in the passholder bucket or limit the number of passholders by capping the number of APs distributed. Their lawyers probably advised them to make the second choice. So, just a week or so after the California lawsuit was filed, sales of APs was halted.
People complained the parks in 2019 were too crowded, so Disney lowered the cap from the 2019 figures by 17%. Mr. Chapek has stated they will not bend on the park attendance cap. He says it gives the guests a better experience and they spend more money with the park attendance caps being lower.
Historically in 2019, the passholder component of the crowd was 34%. Also, historically, they did not cap the number of annual passes distributed; now they do. Seventeen percent crowd reduction coincidentally matches 1/2 of the number of passholders attending in 2019. It appears the 17% reduction in crowd capacity likely came entirely (or almost entirely) from the simultaneous reduction and cap on the number of AP sales. Logically, it appears to be a reasonable assumption that Disney cut the number of annual passes distributed in half and capped it there.
If they cannot use park reservations alone to control the number of passholders in the parks, they can only do so by controlling the number of APs distributed.
Since it is unlikely they will raise the cap on the number of annual passes distributed, the only possible replenishment is when current passholders do not renew. Disney will not re-open new sales of annual passes until they have sufficient numbers to sustain new sales for a reasonable sales period. From my number crunching of the number of park guests in 2019 and passholder mix then, it appears the current number of passholders at WDW is about 500,000. They may have that many waiting for new sales of APs to resume. Disney also has access to data showing how many annual passes they sold per day when sales were open from September 8, 2021 to November 21, 2021. They will not re-open new sales until they have enough inventory to sustain sales for a reasonable period of time. Apparently they don't have enough yet, but we do not know how close they are.
As to your second question, Disney continues to sell a small number of Pixie passes with heavy block-out dates to Florida residents. The number is probably statistically insignificant. It is a weekday pass that also blocks all holidays and works like a "space available" pass to help fill the time periods with the lowest attendance. It probably is also a "good will" pass for cast member families, locals who host family who are ticketed guests, contractors who contract with Disney, etc. It may also be a social impact mitigation for a development permit; like an environmental quality impact requirement for land use development. In any event, the sales of Pixie passes has a greater benefit for Disney than not selling them at this time.