Timothy’s father was Greek. Doesn’t get more hellenized than that. And, why was the Septuagint and later the entire New Testament written in Greek?
And the Gideons' bibles use KJV English; too; although there are 89 other languages they are printed in as well.
You’re grasping at straws.
Timothy’s father was living under Hebrew traditions and using their language in his every-day life. His Hebrew wife was a well known believer, and a highly respected for her dedication to Yeshua.
The entire New Testament was first written in Hebrew, because the apostles were not literate in Greek.
The Septuagint was prepared for Jews living in Alexandria, where Greek was the dominant language.
To this day, Greeks cannot understand the Septuagint. Hebrew grammar with Greek words created a false dialect that nobody spoke, which was called Koine later on.