Like grannyactivist each year we pay for both our children to come for a holiday in our French holiday home. Both are in their late 40s with good well paid jobs It is nobodies business but ours how we choose to spend our money.
Most parents help their children in one way or the other, depending on their income: a bag of groceries, hosting Christmas, having a day out, a holiday, deposit for a house, we all do it one way or another.
Someone just made a stupid remark. I doubt whether it was as freighted with meaning and importance as you have given it. I would probably have just said 'Yes, we love our family holidays' and forgotten the interchange with in minutes, the remark was that trivial.