What i guess is that the tower gave them a wind just before departure that was within the limits. Then they started the roll and the plane remained on the centerline pretty much without needing max rudder input, and to counteract the crosswind they kept the aileron (with the yoke) into the wind. Not too far though cause i can not see any roll spoiler deployed, so once a gust kicked in you could see the plane almost lifting one wing but it didnt ultimately. After liftoff the instruction must have been to remain on runway heading since they didnt apply any bank. To me, as a professional, it does not look that crazy but you can argue that since right before the departure there were high gusts reported it would be smart to delay the departure. This all is ofcourse seen as an 'outsider' without all the official parameters etc, i am sure if they have busted any limitations the company will follow up on it in order to learn from it.

The end result does look awesome though