There's so many dark patterns to it. You'll notice that it's impossible to bookmark your "friends" feed. At every opportunity you get directed back to your wall, which is 95% shit you're not subscribed to.
And yes, uploads fail. You can't upload webp. Uploads randomly orient 90° off.
When responding to posts, the page will jump on every keystroke. It will then close the keyboard unexpectedly and reveal a button that subscribes to 4 random groups in one misclick.
If you move away to another tab or app for 30 seconds, the whole page reloads and you lose your place.
You'd think that with a trillion dollars you could get a shitty PHP feed to work smoothly.
Zuck has us cucked.