Does baby-led weaning develop bad habits like playing with food, not finishing food, throwing food on the ground? My baby has been doing all of these since we've tried the method.

It's quite normal for them to play with foods as they are curious and probably trying to figure the texture, and they'll squish it to see what happens. BLW is messy affair, and like Diana said, you have to be ultra patient if you wish to adopt this way. Eventually, your baby will put food in his mouth and eat it but most of it will end up on the floor, furnitures, in his hair and all over his body lol