[alsa-devel] Auto-muting line-outs?

I'm getting bug reports from downstream about auto-muting not working, and when looking at some of them I find that the reason is that they have a headphone + line-out combination instead of headphone + speaker.

Looking at commits such as 2a2ed0df, this is intentional. I'm not sure what the majority of users want or expect in this case though, of course the users who like it the way it is, aren't raising their voices. :-)

Anyway, for users that really want auto-muting for their line-outs, would a suitable workaround to recommend them, be to tweak user_pin_config, turning the line-out into a speaker-out, or would that have undesirable side effects?