There is still internet in China and my Iranian colleagues seem to have no problem using social media in a country where it is banned. The internet will never be shut down without nukes. But I absolutely agree that we need to save as much content as possible. I have an external HDD which I have used to back up all the podcasts I like and some of my favorite videos. If you have some spare capacity please archive as much material as possible and if you have archived material try to upload it somewhere such as bitchute so people can access it.

As for a democrat or a republican in power it won't matter as much as you think. There isn't a big difference in actual policy between the two and most things that happen in the tech world don't come from the government.