This is kind of a cheap shot. I saw Adele's concert on DVD where she performed at the Royal Albert Hall. Which is assigned seating and just over 5,000 seats. The Travis Scott concert was 50,000 people and festival seating.
Travis Scott's job is to perform a concert. Producers and agents and other people who work for him book his venues and deal with all logistical matters, including safety matters. On top of that, cities have ordinances and rules that have to be followed and are to be enforced by city staff and by the police force. And thirdly, the venues has rules and all kinds of staff present to ensure safety and follow all established protocol.
Expecting Travis Scott to have the same awareness of 50,000 people compared to Adele's 5,000 is a low blow.