This workaround used to work for me, but no longer. Now, in version 10.78.2 for Mac, even if I have multiSelectionLimit set to 500 in my config.json file, when I try to select more than 100 notes, I get an error message: "You cannot select more than 100 notes."
Since my workflow requires me to occasionally go over large sets of notes and retag them, this, along with the impending termination of Legacy, may be the constraint that finally forces me off of Evernote.