The actual "easy" part is that you can sue anyone for pretty much anything. Suing is entirely different from winning the case.

Why they think they have a chance of winning is the weirder question, especially when Musk publically told the advertisers to go fuck themselves.

I hate this timeline so much.

It's also a strong signal to future boycotters.

Oh man. I wish OP would have posted this first.

I did read the article.

For example how does this:

In fact, the lawsuit claims that ad prices on X “remain well below those charged by X’s closest competitors in the social media advertising market,” so “by refraining from purchasing advertising from X, boycotting advertisers are forgoing a valuable opportunity to purchase low-priced advertising inventory on a platform with brand safety that meets or exceeds industry standards.”

force someone or some company to spend their advertising dollars there. If a company spending ad money doesn’t like what the ad service represents, in this case Elon is a douchebag and we’ll just ignore the fact that he gave a Nazi salute at the inauguration, than they aren’t required to use them as a service, illegal boycott or not, which I don’t even believe is a thing.

Here’s a hyperbolic argument. Let’s just say for example we have two grocery stores. One promotes pedophilia and the other does not. The pedo grocery store has prices that are let’s say half of what the other grocery store is, because I don’t know fucking kids makes you feel generous. A bunch of people get together and decide they don’t wanna shop at NAMBLAmart. Is NAMBLAmart allow to sue me because I didn’t shop there?

Because unless I’m missing something, that’s pretty much the argument.