Based on him driving a nice car despite no job I'm just assuming it was the closest condo/apartment to their house and the parents were paying for it. Also, knowing some wealthy families, sometimes people will buy condos as low effort investments, airbnb it to pay the condo fees, so it may have just been something the family already owned that wasn't being used regularly.
They also had three kids, with Tyler being the oldest, so they may have specifically sought out a three bedroom unit for their kids to move into while they were in school/building their lives, a lot of the more religious/traditional people I know don't want their kids to live with them not because they don't want to support them financially, but because they want them to want a partner to share responsibilities around the house with, one thing I've heard verbatim repeatedly is "Stop doing his laundry for him or he's never going to get married" in regards to moms doing their son's laundry. Have the ages of his brothers come out?
All speculation on my part, I haven't seen anyone mention the ownership status of the condo