I have learned to like the language. It's not perfect, but comes closer than most. I've written in a lot of languages, over the years.
My other language is PHP, which I use for my backend work. I've probably been writing that for over twenty years, but I still don't like the language.
As I was learning Swift, I started this series of posts[0]. It's still ongoing, but I haven't added anything in a while, and the language has progressed, since the earlier posts.
This is being too generous to Swift's poorly designed String API. The author gets into it immediately after the quote with an Array<Character> workaround, regex issues, and later Substring pain. It's not a fatal flaw, a language backed by one of the richest companies in the world can have few fatal flaws, but AoC in particular shines a light on it.
I really like Swift as an application/games language but I think it unlikely it can ever escape that domain.