They are not immutable in the 'chflags uchg,schg ' sense.
Updating these files is not in any way shape or form a hassle anymore if you do not update them. etcupdate has that solved. Even mergemaster has specific options to handle unchanged /etc that only diffs in svn-id tags and similar.
But in my opinion the basic premise of the article is false. mergemaster and etcupdate with their diff and 3-way merge capabilities are there because these files are assumed to have local edits.
The startup procedure, scripts, options are expected to be customized; thus the update procedure has handling to preserve local edits.
Updating these files is not in any way shape or form a hassle anymore if you do not update them. etcupdate has that solved. Even mergemaster has specific options to handle unchanged /etc that only diffs in svn-id tags and similar.
But in my opinion the basic premise of the article is false. mergemaster and etcupdate with their diff and 3-way merge capabilities are there because these files are assumed to have local edits.
The startup procedure, scripts, options are expected to be customized; thus the update procedure has handling to preserve local edits.