Regarding 7 year olds, you are grossly misinformed, but that's not your fault. The US Federal government is continuing in it's grand tradition of doubling down on bad science to save face of bureaucrats who made bad policy decisions. For previous examples, see the thousands of studies by NIH to justify cannabis prohibition, USDA food pyramid, dragging feet on leaded gasoline for decades, etc.
The rationale for vaccinating kids was to prevent them from spreading it. The vaccine did that effectively before Delta. With omicron, it's worthless for preventing spread. Kids are the one age group at higher risk from flu than covid.
My two kids (8 and 15) aren't vaxxed. They caught omicron, and now they are in the ICU... Oh wait,no they are fine, had almost zero symptoms, and were playing outside the day they tested positive. Which is, statistically, a virtual certainty. They aren't morbidly obese or immunocompromised, so they shrugged it off.
Nobody is dying on a hill. We're just better at statistics and aren't gullible enough to believe these panicked fools.
Put an experimental product from Big Pharma in your kid for no reason. That's your call. But ask yourself why you suddenly trust the FDA, an organization that labeled oxycontin non addictive, approved Vioxx, approved remdesivir for covid despite it being useless, and that's just the past 15 years. Fear is the mind killer indeed.