Older iPhones will probably be sought out by retro collectors in the future similar to how old game consoles and computers are collectible now. I remember when you couldn't give away old DOS PCs and CRT monitors and now they are sought after by retro PC collectors. I could see the early skeuomorphic versions of iOS being sought after by collectors in the future. They'll want to sideload old apps and tinker around with the OS which is a lot easier to do with a jailbreak.
For Android I've been using this app for years that pulls its data from NOAA
https://play.google.com/store/apps/details?id=pandamonium.noaaweather
I feel like they will ban it anyways before their IPO along with any other communities they deem "controversial"
I can see why people who volunteered their own time to put together informational posts and tutorials don't want Reddit to benefit from them. I just hope they copy those threads into a new post on one of these Lemmy/kbin sites, but sadly that probably won't happen.
The loss of information like this is nothing new. When Geocities shut down, a lot of Web 1.0 era sites were lost forever. Various internet forums have shut down over the years taking all of their old posts with them. Link rot is another issue with sites like Imgur deleting old content. This is why sites like the Internet Archive are so important. They are the library of the internet.