If you really believe that you claims are legitimate, you should sue. And if the courts find that you are right, then they will remove him from the ballot. That's how it's supposed to work.
It doesn't matter what I believe, the court should have a higher standard when determining legal standing for cases like this. Otherwise it reduces overall faith in the US court system and undermines the rule of law.
Companies must respect the rights of all owners. Those companies are entirely free to limit ownership to only those who are willing to invest the equivalent of 10000 Tesla shares if they want (Berkshire Hathaway, for example, does this). Tesla knew they couldn't be a meme stock if they did that, though.
> the court should have a higher standard when determining legal standing for cases like this.
No, the court should have the same, identical standard for all cases. Equal access to the legal system and predictability are tenets of the rules of law.