I see nothing there that reflects on salvation. Just a dispute on sideline issues. Both believe in salvation through faith alone in Jesus alone. What beliefs do they hold that you determine affects salvation?
Some Sola scriptura adherents obviously disagree with you on this.
And that’s again my point. Sola scriptura adherents disagree on Christian doctrine; and, in this case disagree that they disagree.
If "Holy Scripture is sufficient of itself to be the final authority of Christian doctrine,” then all those that adhere to this would result in the same Christian doctrine. Same source, same method = same outcome.
Since this is not the outcome we see, something *other than* Holy Scripture is being applied.
Sola scriptura "sufficient of itself to be the final authority of Christian doctrine" is really impossible in practice.