According to the SCOTUS, a bill that specifically gives the executive permission to modify or waive student loan terms during an emergency (like the national state of emergency brought on by a pandemic) does not give them permission to forgive $10k of those loans. That's too big to count as a "modification" but apparently too small to count as a "waiver". And it's fine to file lawsuits on behalf of people who do not want to file that suit and are not harmed by the matter. Standing no longer matters before the partisan legislative body known as the Supreme Court.
It's brazenly clear that the justices on the court are partisans, and the conservatives in particular are partisans who do not even attempt to justify making the rulings they want to rule. If anyone alive thinks there was any merit to this lawsuit, they're a fool, an idiot, or both. It's heartening to see young people are largely not being tricked.