After the bot attacks on twitch Vtuber channels in those days, i think it's necessary, NOW, a feature which block bots from following channels, the idea should be this : an unverified account gets blocked from the start to follow a channel if that account isnt verified, remember that to create a verified account it's necessary to doing a longer process so the bot buyer much necessarily taking more time and they will give up. Or something which work like that to fight bots.