Buy a parental home or receive it as a gift

Hello everyone, you always see videos on Insta showing how smart it is not to get your parents' house as a gift, but rather to buy it. So house used by parents. For example, this one: https://www.instagram.com/p/DVva6vxiEAm/comments/ Either that's not true or I won't check it. If they say I'm buying (with a seller's loan): For example, I get €2000 a month in rent and pay €2000 in installments. Then cash flow is 0. They also include a tax refund. I don't see any Vo