The issue is with increase in cost overall (much of it hidden like Genie+, ILL$, in-park food, resort parking) with a simultaneous decrease in service (customer service waits, fastpass+, DME) leading to an overall decrease in experience. Others have said it much better in this thread so I'm not going to go into details again. Because alot of the cost is designed to be hidden (doesn't show up when families price flights/hotels/park tickets) it will not have a proportional decrease in attendance.
If you want an example of increased cost with decreased experience, at face value Genie+ looks like Fastpass+, but with the latter you could plan from the comfort of your home and just relax during the visit. With Genie+ you have to wake up at 7am and have to check and recheck during the day (there is always the stress and the double guessing while you're supposed to be relaxing). During busy days it is likely nothing good will be available for 3rd selection..so it's like paying 8$ per Genie+ ride. Without Fastpass+ you really need to rope drop now, and there is nothing less relaxing than rope drop at Disney with young children...
Great post. Your average none DIS non DIBB user will book a trip with no real idea of the hidden costs. I crunched some numbers in the UK thread about the changes to our tickets. Roughly its put £700 of extra costs ontop of the package if you want something like the experience pre Covid.