Well, I’m sure there was a time when that was the case. Howeveeervvvverrr, times have changed. Now people have to actually spend tons of time making sure they fit the judging criteria when they are preparing the freestyle.
My beef is that the term freestyle indicates spontaneity, when, in fact, you really aren’t being spontaneous when you are competing.
From what I have learned about history, it comes from the time when what we would now call “sport ladder” was the norm. In some older competitions, the preliminary rounds consisted of competitors performing a set list of tricks. If they advanced past these rounds, the finals consisted of a “freestyle” where they could perform any tricks they liked.
I’ve always assumed it was called a freestyle because you have the freedom to do whatever tricks you want. Also you get to add your own bit of style to it.
It was taken from other sports that have freestyle performances. The term pre-dates people using it in yoyoing.
I think the first modern freestyle yoyo competition was Montreal 1992, but I’m not 100% sure. Might actually have been earlier, out in California with Bob Malowney’s early contests.