I'm using the new Tab Export in Premiere Pro 2022 (I'm not a huge fan of it, I admit).
Before when there were some In/Out points in the timeline automatically the export range was set to "In/out source", but now even if I have some "In/out points", the export tab is set to "Entire Source" and I need to change it manually (and I forgot most of the time).
I do not use "Work Area Bar" as I prefer In/out points
Maybe there are some preferences or something I could do to set it to "In/Out Points automatically"?
As you have found, it does not appear to set the "Range" based on whether there are in/out points, or even if the work area is used. The setting options are Entire Range, Source In/Out, Work Area, and Custom. (I don't know what Custom does. I assume it uses any changes you make to the times in the export preview window.)
But the setting is "sticky"; it defaults to whatever was used last. So just use in/out once, and, as long as you are exporting in/out, you're good to go.
If you ever export the full range, just remember to clear in/out points so in/out will be the full range.