From April 15 You Will Be Forced to Get Personalized Ads Based on Your TikTok Activity
https://twitter.comLooks like you will soon be forced to get personalized ads based on your TikTok activity and there will not be an option to turn it off.
Update 17/03/2021:
TikTok is basically making personalized ads the default and users will need to opt out by making the settings change themselves.