MagicBands track people all day and WDW is still kicking.
Magic Bands don't track you. There are a few beacon type spots for photo linking and showing your name on a screen - but even things like your FP choices aren't studied in any sort of data set (like "this demographic chooses Soarin, Space, and Kali...")
There's not some grid of beacons tracking people or bands.
You have to opt in, not opt out, to even be studied/recorded. All their ticketing info, room ressies, etc.. don't share data.
And then that data they have recorded is generally not used. "One day we'll use it..."
It's painfully stupid - they know someone bought a ticket. So they know how many of each type of ticket they sold. They sort of know how many of each ticket type is in the park on a given day - but it's an opt-in and compared to park population a stupidly small number that is collected.
But you'd think cuz it's on your magic band they'd know where you're from, when you bought the ticket, etc... nope. That it's from a resort guest? Nope. That you have FP in 30mins and just barely made it to the park? Nope.
If Disney wants to know how different demographics like a ride/show they have to ask them - and then classify it by whatever info the survey taker self reports. Out can lie all day and say you only ride Figment and spent 8 million dollars on sunglasses. If you self report it, that's all they know.
Every time a repeat guest declines to fill out a survey it's essentially like they didn't visit the park. There is no data that you are you and a repeat visitor with opinions and stuff. There is that data point from 5 years ago that said it didn't like XYZ, but if you show up again and still don't like XYZ formally via a survey there's no data point and your opinion doesn't exist or matter.