This is actually a hugely important project if successful. Storing data long term is a huge hidden problem globally. Magnetic storage and optical discs have limited lifespans, and paper remains the most reliable long term medium IF stored in perfect conditions.
We are losing our heritage slowly all the time as books degrade or are lost, or library's struggle. Even data on the internet and digital media is fleeting without a long term solution to archive stuff robustly. Genetic data in seed stores for example would last much longer if we could store it in coded form and "rebuild" the gene later for use.
I hope this project or something similar succeeds as we need to be thinking about how we preserve knowledge and data for not just the next 10 to 20 years but the next 10000 years.
Going futher into sci fi territory, if our species is going to go to other solar systems then it will probably be generation ships unless we make some major discoveries. A civilization that spreads slowly across the stars will need reliable ways to transfer data over 100s and 1000s of years to benefit new worlds. That is all data - our science, arts, music but also genetic data of earth's bio diversity.
I think that's true but South Parks humour has also changed over time. That's the nature of satire - it lampoons human folly and vice, including the ideas of offence and moralising which are so often borne out of hippocracy.
You mention taboo topics like 9/11 as if it's a no go area but actually that has been a rich source of comedy and satire due to the level of hippocracy displayed around it. The hippocracy of Uber patriotism, religious nationalism, racism (you mention people having to be careful about the target and culture of jokes, but many groups found the exact opposite after 9/11 - certain ethnic and religious groups were all tarred with the same brush, particularly in the US) and more. Even the idea of self censorship out of fear of causing offense. Some of this is being replayed right now with a contemporary conflict.
South Park is in a similar tradition to other satire such as Private Eye in the UK, or The Onion, or various other TV shows. South Park is just a sometimes more extreme version more willing to be deliberately offensive. But satire moves with the times like any other type of humour.