Depends on the circumstance.
For instance, a local business couple separated and the business sold, they divided up their properties into his and hers. She lives ''on the farm'' which is Trust owned (might have been while they were in business too) while he has several rentals and lives with his newer GF in hers.
Whilst there is nothing wrong with that, rental and grazing incomes go back to the trusts, Dad earns cash now for his ''building work'' and it means their children were eligible for low-income household assistance inc University education and accommodation costs.
(The GF's children age also made that couple eligible for low-income benefits.)
Business couple Mum was on study benefits while she did a pt course and the children at school, fitted in between going away in the family camper while the rural tenants kept the property running.
So, my line in the sand is drawn when public funds start supporting lifestyles and if it wasn't for the age of the children, they wouldn't have had an opportunity to claim various low-income family benefits when they did, while income sources were directed back to family trusts.
That is when I have a problem with it.