Here is the proper write-up regarding its availability and licensing status:
When users search for "Hiragino Sans TC free," they are often looking for that specific "Apple aesthetic" without the Apple price tag. This has led to the rise of legitimate open-source alternatives that mimic its clean, sans-serif look, such as: Noto Sans TC hiragino sans tc free
: Users on Reddit often discuss using system-bundled fonts for creative projects. Note that while you can use it in designs on your iPad, extracting the font file to use on other devices like a PC is generally not permitted by the license. Here is the proper write-up regarding its availability