This guy needs to read the Gospel where Jesus and his disciples technically violate the Sabbath in a narrow legalistic way. Jesus points out that “the Sabbath was made for man,” not the other way around. Some masters would have been happy to work people 7 days, but the Sabbath gave them rest, and a chance to thank God.
Digest the entire post in order to get the point that the theme is not what is the holy day for worship.