It's possible that the meltdown of the other social media platform is going to see years of discussions, links, networks, images etc lost to posterity. If the t.co link system goes, all the references go.
This alarms many historians and feeds into longstanding, important concerns about the failure to archive the web.
I do sometimes wonder if there is space in those concerns for the recognition that lots of people have always wanted social media to be ephemeral: auto-deletes of old tweets, anonymous accounts etc. Although historians are fond of complaining about the scarcity of sources on given topics, history is impossible where everything is preserved. It is an inherent feature of an archive to exclude as well as include.
None of this is an argument against preserving the internet - many are already grateful and many more will no doubt be grateful for that work of preservation. But I am interested in the totalizing instincts that sometimes peek through our concerns about oblivion.