Generally speaking, that is true. However, Lindell says this case will be brought by various states' AGs, which means the states themselves will be parties. That gives SCOTUS original jurisdiction.
In all Cases ... in which a State shall be Party, the supreme Court shall have original Jurisdiction. In all the other Cases before mentioned, the supreme Court shall have appellate Jurisdiction, both as to Law and Fact, with such Exceptions, and under such Regulations as the Congress shall make. -- US Constitution, Article 3, Section 2
Generally speaking, that is true. However, Lindell says this case will be brought by various states' AGs, which means the states themselves will be parties. That gives SCOTUS original jurisdiction.