It is possible for YouTube's A.I. or bot to flag your video if it detects that you do not have the proper copyright or licensing for the assets used in your video. This could result in your video being taken down or a copyright strike being issued against your channel. It is important to make sure you have the appropriate permissions and licenses for any assets used in your video to avoid any potential problems. It is always best to check the terms and conditions of the assets you are using and obtain proper permission or licensing before using them in your video. If you are unsure, you can also reach out to YouTube's support team for clarification. As for personal experiences, it is always best to follow copyright laws and respect the intellectual property rights of others to avoid any issues.