But there's a beacon of real hope in what I said above, and I'm not sure if you caught it.
When we embrace the free software world, if The Rot does come, we can fight it.
When The Rot comes on Windows, or on Spotify, or on Facebook, we have to either accept that rot or abandon that platform.
When The Rot came for Ubuntu, I had a clear, direct, simple migration path to a platform that was not covered in Rot. The majority of my tools and skills transfer directly. I did not have to make any major changes to my workflow. I had a couple of minor annoyances, I dealt with them, I moved on.
I can (and have planned to for a while, though I haven't actually done it yet) move this fedicerse instance to Hometown without losing anything but a few hours of my day.
There will come a time when the same is true of other platforms and, until then, you can at least preserve your contacts and keep an archive of your posts.
When Plex started tightening the screws, I took my library and left.
Free software is not a silver bullet. It doesn't protect us from The Rot, but it does give us the tools to fight back.