Editing being always on by default is especially confusing for new users (i.e. learners), who can accidentally 'engage' edit mode through simple attribute table work like sorting, clicking on a row, etc. This greatly impedes other workflows they might want to do when learning how to use ArcGIS Pro. In many other use cases, having editing 'on' by default could result in unwanted edits, confusion, or broken data.
There is an option to return to using edit button, which must be enabled in the options -> editing:
This should be checked 'on' by default to protect data and support users unfamiliar with editing. The 'work' of unchecking this box should fall on experienced users who know what they are doing with their data and have more experience with editing data.