How is it bad parenting? It's not like the parents sat there and said go ahead.
Kids try to do whatever the other kids are doing. TikTok showed these kids how other kids are getting popular/views and they wanted to do it too. Everyone probably seemed fine so they do it.
Now if a parent let's tiktok raise their kids for 10 hours a day, that's bad parenting. Kids being stupid kids isn't bad parenting. Tiktok should be guilty for letting their platform show children doing dangerous **** like it's a cool thing.