A user could not understand why the blue Export button in the File > Export As... dialog was not mapped to the Enter key which was his choice over using the mouse.
I found out that to get that button to work with the Enter key, the user would have to use the Tab key to get to it.
See what I did here to get that button to respond to "Enter"
This is MacOS 12.6.3 and Photoshop 24.2.0
Other Photoshop settings dialogs have the Save or OK key highlighted and tied to the Enter key.
The Export button does not and it seems like it should be.
Jeff Arola reports that checkmarking Legacy Export in Export Preferences does restore the Enter key to Export, but M1/M2 users will need to use Rosetta.