I took my then 12 year old and her friend to see One D at the Dome in 2014. The sound of 50,000 tween/teen girls shrieking will never leave my brain.
Then for her high school graduation (2020) we bought her tix to a Harry Styles show for that summer - of course COVID came and cancelled it, but Harry rescheduled a year later, but then he rescheduled again - they finally got to go see the show as sophomores in college.
One D was nothing more than a boy band but Harry has a very devoted following and has managed a pretty successful solo career.
The rest of those guys I'm sure are struggling with Lance Bass Syndrome while Harry is closer to Justin Timberlake status.