Thanks, Claude31.
The main problem is that there are occasionally times when it would be hecka useful to autorepeat alphanumeric keys, like when you just need to type a line of CCCCCCCCCC’s for comment blocks when maintaining legacy FORTRAN 77 programs, for example. Yeah, I know this isn’t the most common use case of Xcode, but it’s the arbitrary restricting of freedom and functionality by Xcode’s developers because they can’t envision possible use cases that is so irksome. I’m not in a rush to file a bug report because Xcode now only supports versions of macOS that have long since dropped support for the Macs that I own and use :/