The whole thing takes 13GB to download where resuming fails, has an undocumented config format which doesn't work with git properly and is more sluggish than an Electron app.

The app upload process itself is so broken that even Apple had to release a third party tool to bypass it.

I refuse to believe they are using this thing internally, they must have some kind of special internal process to make this mess sort of work.

I could say similar things about appstoreconnect where even reordering app images is broken with a race condition if you click too quickly and you have to reload the page.