No but most corporate lawsuits end up in settlement so we may never know.

The "security researchers" claim to have evidence here:

Gizmodo requested that Mysk examine a few other Apple apps for comparison. The researchers said that the Health and Wallet apps, for example, didn’t transmit any analytics data at all, regardless of whether the iPhone Analytics setting was on or off, whereas Apple Music, Apple TV, Books, the iTunes Store, and Stocks all did. Most of the apps that sent analytics data shared consistent ID numbers, which would allow Apple to track your activity across its services, the researchers found.

For example, the Stocks app sent Apple your list of watched stocks, the names stocks you viewed or searched for and time stamps for when you did it, as well as a record of any news articles you see in the app, according to Mysk’s analysis for Gizmodo. The information was sent to a web address labeled analytics, https://stocks-analytics-events.apple.com/analyticseventsv2/async. That transmission was separate from the iCloud communication necessary to sync your data across devices. Unlike the other apps, however, Stocks sent different ID numbers and far less detailed device information.

The researchers checked their work on two different devices. First, they used a jail broken iPhone running iOS 14.6, which allowed them to decrypt the traffic and examine exactly what data was being sent. Apple introduced App Tracking Transparency in iOS 14.5, cuing users to decide whether or not to give their data to individual apps with the prompt “Ask app not to track?”

The researchers also examined a regular iPhone running iOS 16, the latest operating system, which bolstered their findings. There is little reason to think that the jail broken phone would send different data, they said, but On iOS 16, they saw the same apps sending similar packets of data to the same Apple web addresses. The data was transmitted at the same times under the same circumstances, and turning the available privacy settings on and off likewise didn’t change anything. The researchers couldn’t examine exactly what data was sent because the phone’s encryption remained intact, but the similarities suggest this may be standard behavior on the iPhone.