From the horribly slow typecheck that gets exponentially worse every time anyone adds a protocol extension to <very common type>, the debatable choices made with concurrency/async/actors/swift6, the only-very-recently-stable ABI, the regular titanic undertakings needed for bumping any major version that are almost unheard of in most other languages, etc.

Swift is an alright language today. Good even. But for a 10 year old language ? It aged horribly, going through senseless breaking changes just to fit Apple's needs. It's fine if you're locked in on Apple's platforms, but any other language doing that would have been set on fire already. Look at how painful the python2/python3 split was: Swift did worse than that, _four_ times.