What would you expect from something moving on a 15-centimeter screen versus an open space with live music? Folk dances were never something frozen in time. Each generation adapted them based on where they lived, what music they had available, what the space where they danced was like. What you see on TikTok is exactly that: young people figuring out how to make it make sense in their context.
The thing is, a traditional dance would lose all its charm if people recreated it like a museum without touching it. The steps can change, the music can have different beats, the clothes can be a mix - that doesn't make it any less valid, it just makes it alive. What matters is that people understand where it comes from, respect what their grandparents did, and then make their own version. That's cultural transmission, not its disappearance.