Why is the first question of the Westminster Shorter Catechism so different from the Westminster Confession opening statement?

The former is based on the latter, being drawn up by a special Assembly convened in London in 1643, to be a Catechism for the Christian Church in England, Scotland and Ireland. It was adopted by the (Presbyterian) Church of Scotland in 1648 as a means of Christian instruction. Here is how a 1981 Presbyterian Church of Australia words question and answer No. 1 – > “What is the chief purpose for which man is made? The chief purpose > for which man is made is to glorify God, and to enjoy him for ever. > Scripture: 1 Cor 10:31; Rom 11:36; Ps 73:24-26; John 17:22, 24; Rev > 7:17.” Yet in “The Westminster Confession of Faith for Study Classes”, the first declaration is all about God revealing himself through his works of creation and providence, but primarily through written Scripture, so to declare his will to the Church as his former ways of revealing his will to his people have ceased (Heb 1:1-2). The Shorter Catechism No. 2 appears to make the link: > “What rule has God given to direct us how to glorify and enjoy him? > The Word of God, which consists of the Scriptures of the Old and New > Testaments, is the only rule to direct us how to glorify and enjoy > him. Scripture: Gal 1:8-9; Isa 8:20; Luke 16:29-31; 2 Tim 3:15-17.” The Westminster Confession of Faith 1.6 opens up with, > “The whole counsel of God, concerning all things necessary for his own > glory, man’s salvation, faith, and life, is either expressly set down > in Scripture, or by good and necessary consequence may be deduced from > Scripture…”. Yet, ironically, the previous Study Class question is asked, “How do Protestants sometimes subordinate the authority of Scripture to men?” and I wonder if the first Shorter Catechism exemplifies this fault. Thus my question is, why would man be made the object of the first question, not God and his written word? Is there something intrinsically wrong with the first Shorter Catechism question and answer?