Whenever Paul speaks of our faith in his epistles to the Romans and Galatians, he is making reference to our justification (Romans 4:4-5; Galatians 2:16; 3:11; 22). Ephesians 2 definitely matches this context. These texts affirm justification to not be meritorious.
In Ephesians 2:10, the phrase "for good works" means that good works constitute the purpose of being created in Jesus Christ. This is a sanctification verse.
The irony of this author claiming that good works "play no role" in the "initial stage of salvation" is that it is accomplished through baptism, which is a work.
God will certainly give eternal life to those who display good deeds. When God judges us, He examines all of the details concerning our personal status with Him. However, those works are not meritorious. Justification in Scripture is described as an unmerited gift of grace and not something that we can earn, even in part (Romans 3:24; 5:15; 17; 6:23). The gospel is received on the basis of faith which results in one's justification before God (John 20:31; Romans 1:16; Ephesians 1:13; 2 Timothy 3:15). Our good works do not play a role in us attaining or maintaining justification.
"This principle is made even clearer in verse eight, wherein Paul contrasts the aforementioned good works with bad works: “[F]or those who are factious and do not obey the truth, but obey wickedness, there will be wrath and fury.” Disobedience and wickedness are not merely manifestations of a degenerate heart, but are causes that bring about the effect of wrath and fury."
It is true that our sin brings about the wrath of God. It is also true that our works provide a general description of our state of heart. However, the author being critiqued has not successfully shown how justification is a process.