Depends on the baby. Actually no, depends on the parents.
This is a fun thread. Some years back, my wife, daughter and granddaughter (now 6) were booked together on a YYZ-YYC flgiht. In j.
Yes, ugly looks when boarding. But no, granddaughter totally under control.
Upon arrival, the ugly looks congratulated our daughter on how well she handled her kid.
There are no bad kids. Only bad parents. And good parents have every right to claim credit.