According to complementarian restrictionists, women could only teach women and children at church, not men.
That, in practice, mean that men have, at first, a wider choice of ministries available to them: Anything which is not gender-specific and reaches a cross-section of people, is only meant for men. Meanwhile, there is only two roles for women, to use all those gifts of prophesying, teaching, discernment, leadership, etc. which God, who is no respecter of persons, may give out to them: 1) Towards other women and 2) towards children.
The picture of available ministries looks like this:
I made the last block bigger on purpose, as most churches have more recipients of ministry involved here, which includes the Sunday morning sermon.
Now, assuming the church has an equal number of men and women who want to get involved, and each get involved where he/she is called to, involvement would look like this:
For the sake of this argument, I called complementarians right. I assumed no woman was called to teach a mixed gender group, or a group of men. Therefore all the women are in the first two boxes. But God never restricted men from doing those, so I will put some men in these boxes too.
Now, you may notice a very interesting thing: There is a much bigger women’s ministry and children’s ministry than men’s ministry. Why? Because God gifts women equally much, and her gifts for building up the church are used solely there.
With a bigger women’s ministry than men’s ministry, women will be reached better. This would mean that more women than men are effectively discipled. It would mean more women in church.
Also notice the children’s ministry block. Of course, a boy in Sunday School will get the impression that the church is feminized. Almost all his Sunday School teachers are women! And the unchurched man will see the church has an abundance of ministries to women and none/ few that reach out to him.
What can be done to solve the problem?
I can see these potential solutions:
1) Deny that God gave gifts to all to build up the congregation. Say God gave gifts mostly/ only to men. Or that women’s gifts should not build up the congregation. That will equalize the picture:
But it would solve the problem by contracting, not expanding the work of the church.
2) Eliminate any group-specific ministries, and make the church “family integrated.” That will eliminate anything where those “weak”, “easily misled” women could use their equally big gifts:
Once again, this decreases what the church does, and how effectively it uses gifts. Half of the congregation’s gifts still are not used to build the congregation.