So Laurent gave an interview in which he said his sister wasn't in the same financial situation as himself as she married someone of "standing" and with money, while he married for love.
I thought Astrid got on well with both her brothers - seems like Laurent is perhaps having a sly dig here to me.
https://archive.ph/ZeW9T#selection-2363.0-2403.207A google translate of the relevant part (so happy to be corrected if it is wrong)
Aren't your sister Princess Astrid and her family in the same boat in that respect?
“Yes, but she married someone of good descent (Prince Lorenz belongs to the highest nobility in Europe and is a private banker in Switzerland, ed.). I should have married a billionaire. Then I wouldn't have had any trouble with the regulations. But I don't like money and I married a woman I loved.”