This article is perhaps a little clearer. It does state that this law only applies to same sex couples, so in essence the BBC piece is correct, if not entirely clear in its expression:
https://www.independent.co.uk/news/giorgia-meloni-ap-italian-milan-senate-b2300769.html
No, I got that - it was me not being clear. I was saying that the surrogacy argument only has weight if you apply it to mixed sex couples as well.
The issue with the headline is using the term 'parents' when that's what the issue is.