

I keep thinking about the guy complaining that Tom Morello from Rage Against The Machine got political with that one picture of his guitar, and the reddit comment or whatever asking what type of machine he thought the band was raging against - kitchen appliances?
An individual would risk corporate lawyers lobbing suits at them they don’t have nearly enough resources to fight. In that way, it’s much like other forms of activism: individual actions are easily singled out and retaliated against.
If a ton of people were to do so, however, they might have an impact. Either the registrar would have to take steps to limit who can submit them, which might conflict with some laws, or they’d invest a great deal of resources trying to sort out the legit ones. Trying to single out people for retaliation is hard when there’s enough of them. In this way, too, it is like other forms of activism:
There is strength in numbers. There is power in unity.
If, hypothetically, someone were to coordinate such actions in the style of a crowdsources DDoS, and they could get enough participants, they might get away with it.