Another point being that Baptists wouldn’t mind you holding hands in Church either.
I am some what new to Rubrics and I am interested in learning more, but let me say this, if its not forbidden then why is it an abuse. Noise, an abuse, Changing the words of the liturgy, an abuse. But holding hands, an act of unity in faith, an abuse?
Protestantism is largely based on an individualistic relationship to the Lord. What is and always has been true of the Catholic Church is Her recognition of the necessity of corporate worship. Hence we pray with all the Saints. Something so undisruptive and meaningful ought to allowed. If we are not acting as one body then why do we all say the same words?
The Church even in liturgy should not feel obligated to regulate every movement or gesture. This ultra legalism is what tends to fuel critics and dismantle and over complicate what is really a beautiful thing. God’s creation worshiping Him.