Problem is, they really don't need your approval or trust regarding vaccines.

The government demands children go to school, with various forms of truancy laws. Those schools require numerous vaccinations before your child will be let in, with exemptions only available in certain cases that will absolutely be closed if people start using it too much. Many states even require it for homeschooling, so you can't just expect to opt out entirely. Its so normalized its just added on to your newborns first couple doctor visits as a matter of assumption.

This is how they've always kept the entire population full vaxxed, and it happened before any of us were old enough to think let alone consent. And it will continue that way until we attack it at that angle, which never comes up in these discussions. Sure a handful of areas and people have found ways to wriggle around it, but again that only will continue to be allowed until too many people figure it out.

Adult vaccinations were never a continuous cog to their goals, so they could afford to blow it all on COVID and just let the small amount of people who get flu shots continue to never question anything. By the time they want to do a "population wide shot" again, it'll be in a generation who don't remember COVID much.