Is tough, I was thinking there are numerous styles of yo-yoing, and then there’s humidity style.
In other words, the tricks you can pull off (without gloves) that don’t turn into a mess due to sticky hands.
Humidity can make a tough trick even harder, wonder if competitors change their routines outdoors when they know humidity could be a factor, i.e. omit a trick.
Add humidity and wind, and it’s quite a handicap. A bit adverse to gloves, can’t pinpoint it, maybe it looks too serious about the whole thing, but they might really help.
Then there’s talcum powder, but do I really carry it around? not