They want a judge to force Musk to follow through on his promise to buy the platform, after he backed out of his promise to do so. According to the lawsuit, it's clear that the stock market tanked after he signed the deal to buy the company. The company said that the dip reduced Musk's wealth by $100 billion. He wanted out because his offer looked ridiculous. He isn't buying his excuse that the platform is filled with bot accounts. That's what the social media site puts it. One of the reasons he wanted to buy the social networking site was to defeat the fake news. It's the bottom line for the social networking site. Musk should have to pay because he signed the dotted line. He is being asked to close the deal at the agreed upon price.