Perhaps you’re unaware of the fact that movement along major faults (plate boundaries) produces lateral faulting? (take a look at Chile for a good example)
You’re unaware of anything else, so no surprise.
Not when plates are DIVERGING......Chile is a junction of 4 plates, the Nazca, South American, and to a lesser extent the Scotia and Antarctic......all CONVERGING.
Whereas, the Rift Valley is caused by the Arabian plate DIVERGING from the African plate.
Faults that happen to be lateral of major faults occur on converging boundaries and transform boundaries.....not diverging boundaries......which is why the Great Rift Valley follows the plate boundaries and doesn’t jump 15 miles and 90 degrees in orientation compared to the fault line....and why the Red Sea is so linear.
You do know that this article is talking about geo-activies occuring at diverging plates.....don’t you?
....and “lateral fault” already has a definition that should not be perverted to meet your needs.
How about you get a little education before speaking?