Yea, this is more like vandalizing Wikipedia than spoofing or interfering with safety-critical systems. It's juvenile, but probably not crashing any planes. It'll get reverted, and then presumably the adsb exchange website will tighten up their security.
And is Vance or Trump watching Flightradar24 in their free time? And if they did, would they even get mad at this and not find it funny? And if they did get mad at it, would they do anything at all? If they did something, would it be anything desirable or just trying to retaliate at whoever drew this?
Much like the Biden team wisely embraced the Dark Brandon meme. To quote the ancient stoic wisdom imparted to Punxsutawney Phil, "don't drive angry."
Trump is a narcist and it is known that he spends too much time on social media- and golf.
Vance however is the real deal. May god/science help us all if Trump ever has his long overdue stroke.
There is no security within ADS-B. All you need is directional antenna pointing at receiver (if you just want to fuck with website, not cause mass panic in the nearest airport tower), there is no encryption or other form of authentication in the messages.