https://www.thebalance.com/what-is-backline-2460742
Therefore, I went into the article thinking it would describe items which directly applied to either using a rented Montage (like bring in your X7A backup on USB so it contains all your libraries/settings/etc -- which the article does cover) or using your Montage in a live setting using other backline equipment such as monitors, mixers, and dealing with the backline techs (folks who run the sound).
There's some of that, but things like how to setup the superknob or how to setup scenes do not seem directly related.
I guess if you take the position that the article is addressing those who never touched a Montage and the backline keyboard "thrown at them" is a Montage - then the title applies 100%.
[Later edit] - Responded (paraphrase) "good guess".