I am glad you are enjoying the rugby! This form being played is a variant called Sevens, which uses 7 players a side with 7 minute halves versus
Lifting in line outs used to be illegal. I do not like it. They are even more ungainly in Sevens. Rugby keeps fiddling with the laws to give the attacking team more advantages. However, that used to be the fun of line outs. The team throwing the ball always has the advantage of knowing where along the line the ball is going to be thrown, but the other side had more of a chance to steal it.