Just a heads up for anyone else who wants to use the disambiguation comment, I had to make a couple corrections:
Options > Advanced > Scripting:
$set(album,$if(%_releasecomment%,%album% \(%_releasecomment%\),%album%))
I just realize that the forum was stripping out the underscores and backslashes which is why it didn’t work for me initially. If you click through to that thread you will see the correct script, too.