I posted the following enhancement request in ArcGIS Pro Ideas:
I found the following post in ArcGIS Pro Questions:
https://community.esri.com/t5/arcgis-pro-questions/is-the-stealth-mouse-attached-file-supported-in/m... --> I don't really understand Dan's answer.
Are there any plans or not to support the Stealth Mouse for stereo mapping in the future?
The Stealth Mouse and Soft Mouse are supported in ArcGIS Pro 3.2. These are great news! I really like the GUI to assign functions to the buttons of the 3D mice. Enhancement requests: