Ultimately, this case is really, really good. It has terrorism in it thus national security concerns. The law in question is fundamental to the success of the tech companies, so any change to it's interpretation shakes the foundations of an entire industry.
If the interpretation is significant, it could force congress to take the question on how to change the tech industry more seriously like after the right to abortion was struck down. That would be incredibly significant. The effects of the change would likely be in force by the 2024 elections, which the effectiveness of the social media arm of the presidential campaigns has been a decider in every election since 2008 (except 2012 since it wasn't competitive).
This case could set the course of history for the next 2 years at least