I will probably get downvoted for saying this. But I'm just thinking out loud. But I remember back in the golden days of tf2 - around 10-12 years ago, Badlands wasn't nearly as hated. Yeah pushing out of last was hard but that was something that separated the good teams from the great teams. I remember working with my team(s) on that part of the map and it was difficult but it could be done.
Obviously the game has changed a ton since that long ago. But maybe that's the point... I feel like with how fast the game is now with scouts+medic, the crossbow being op, and other meta changes... that it's less the map and more the way the game has evolved that is the problem.
Not saying there isn't anything wrong with the map though. Just some perspective.