Why dont wild garden birds like these wild garden bird seeds?

I have similar seeds to the ones in this video, the bag said 'wild garden bird seed', they have been out for a few weeks now and ive hardly seen any garden birds eat them, ive seen them come to peck at suet balls and fruit but not the seeds. The bluetits in the video below come along and are digging through the seeds to get to the sunflower seeds only, ignoring the yellow seeds and corn. If you see over other videos they ignore other seeds but go mad for suet balls and pelletts only. Was the packet wrong? Can anyone shed any light on this? https://youtu.be/zIHS-B4eEAQ?si=Y7FeVCrQdzEY_pKC