You're just nitpicking without actually reading the article, aren't you?
Galatians is written to Jewish Christians:
But now, after that ye have known God, or rather are known of God, how turn ye again to the weak and beggarly elements, whereunto ye desire again to be in bondage ?
Ye observe days, and months, and times, and years.
I am afraid of you, lest I have bestowed upon you labour in vain.
Beware of dogs, beware of evil workers, beware of the concision.
For we are the circumcision, which worship God in the spirit, and rejoice in Christ Jesus, and have no confidence in the flesh.