MYTH: The Sturzian method employs an oversimplified and mechanical approach to textual criticism.
FACT: The Sturzian method includes ALL of the basic tenets of both external and internal evidence.
Gal. 5:21 is a great example!
There can be no doubt that the word phonoi ("murders") is original here. It's ridiculously simple. Phonoi enjoys early and widespread external attestation, which is corroborated on the basis of internal evidence -- a copyist simply passed over phonoi due to an error of the eye.
This isn't rocket science.
In this regard, I give the THGNT a lot of credit for breaking with the Critical Text here and printing phonoi in their text.
It's a hopeful sign. The ECM needs to do the same.
Have a wonderful day!