The technique is bad (especially for someone who's supposed to be really good) and also it looks like they are doing either 50m or 100m sprints.
But even assuming it's 100m sprints 2 minutes is way to long for someone who's supposed to be competing on national level (for reference, when I was 13 I swam 1:26 on 100m freestyle and I definitely wasn't any good).
So maybe they're actually doing 200m and it's just not shown well.
If they were swimming 200m they would be crazy fast tho.
Olympic gold medallist swim around 1:55 and the women world record in 200F is 1:52.98.
Yeah, kind of bothered me too.
I couldn't get past the first chapter cause I'm so bothered by the swimming. It's probably not really important to the story everything about it is just really bothering me