Shoot the messenger? Nah, more like scare the boobs and proles. Ooooh, nanoparticles, ooga booga! Gates/Fuchs/Soros/ ... are out to get us!
Well, guess what: there are nanoparticles in vaccines, and
they even admit it! They're called "lipid nanoparticles" and they're just little chemical particles used to transport the vaccine within the body. Not programmable bots designed to wreak havoc with us.
As to how harmful they may or may not be, the jury's still out on that, but it's not like they haven't already extensively tested and found safe for the most part. Time will tell. (Personally, having had 2 shots + booster, I'm not worried.)
BTW, that video just shows that pointy-headed scientists are just as susceptible to scare-mongering as the general public.