Agreed. But not mentioning an x-wing does not mean that it does not exist. And then what about instances where I see such an x-wing first, before a hidden single, or locked candidate and such?
Now, I’m about to tell you guys that shortly after sending this post, after all, I discovered an alternative name for the x-wing like configuration. It appears in the 6th grid from the top here:https://www.geocaching.com/geocache/GC33KDE_intermediate-sudoku-strategies-ghost-numbers
The author of that site calls it a mini x-wing! Maybe this name suits better and should be adopted by the Sudoku community. Here’s what he says: “ Some commentators call this position a "Mini X-Wing" based on its similarity to a real X-Wing. If you can wrap your head around this position, it may help you better visualize X-Wings”.
Next, to my dismay I found a mistake in my presentation of the second grid above. It should be: after the locked candidate type 2 method is applied, a mini x-wing is established and not the other way around.