Turns out the DiFi video is a fake.

[Ms. Toad]

83. So what makes you think the adults brought their children to make the adults' case?

I was not lobbying at age 12, but I was already politically active. I had already engaged in one act of civil disobedience (supported by my parents, but they were unaware of my plans until I informed them). At age 12, I lobbied the school (and won) on a 1st amendment issue related to the Vietnam war - and did volunteer work for a presidential campaign. Again - with my parents support, but I was not carrying water for them. My first lobby visit was not until age 18 - but that was largely a function of distance, not lack of inclination (or the maturity to engage in such activities). I lived 100 miles from state legislative offices & 1500 miles from the US Congress.

I've watched the entire video (as well as the snippet). Nothing I see in the visit itself suggests the adults were using the kids to make the adults' case.

I do have questions about the edited version - it was carefully edited to include the portions that appeared condescending and irritated. I would not be surprised if adults did the editing - which is inappropriate.