I do know what I’m talking about. There is a reason why the Church sends potential priests to so many years of seminary training, instead of just telling them to do a few google searches.
I actually know what Anglicanism means when using the word Godparent. And I know that this role is something that a Catholic simply cannot do in good conscience; because to make a promise on behalf of the child to be a member of a non-Catholic religion, and to promise to raise that child in a non-Catholic faith is inconsistent with the Catholic faith.
If you want to read for yourself how Anglicans view the role of Godparents, see here:
churchofengland.org/weddings-baptisms-funerals/baptism/becoming-a-godparent.aspx
That is, for all practical purposes, the very same definition of Godparent used by the Church.
Since the OP is in Australia
6 Where children are to be baptised, the minister may say these or similar words.
Children are baptised in response to God’s all-embracing love. Parents and
godparents who have responded to that love come now to bring their children for
baptism. Before this congregation they must express their own trust and
commitment to the promises of God, and
their intention to bring up their children in
the faith and practice of the Church. In due time these children should make their own
response to God, and be prepared for confirmation.
The priest says to the sponsors of those unable to answer for themselves
Will you accept the responsibilities placed upon you in bringing name/this child for
baptism?
I will.
Are you willing to answer on behalf of name/this child?
I am.
By your own prayers and example, by your friendship and love,
will you encourage name/this child in the life and faith of the Christian community?
I will, with God’s help.
anglican.org.au/docs/commissions/liturgy/Holy%20Baptism%20in%20Morning%20and%20Evening%20Prayer.pdf
Those references to the “faith and practice of the Church” do not refer to the Catholic faith—they refer to Anglicanism. No Catholic can make such a promise in good faith.