In the anime fan subbing community (which this document is likely from), it's very common to hate on VLC for a variety of imagined (and occasionally real but marginal) issues.
The kicker is that many, many other players broke. Very few hardware decoders could deal with this format, so it was fairly common to get dropped frames due to software decoding fallback even if your device or player could play it. And, about devices, if you were previously playing h264 anime stuff on your nice pre-smart tv, forget about doing so with the 10-bit stuff.
Years passed and most players could deal with 10-bit encoding, people bought newer devices that could hardware decode it and so on, but afaik VLC remained incompatible a while longer.
Eventually it all became mutt because the anime scene switched to h265...
It's nowhere near enough codes, especially in darker regions. That's one reason 10-bit is so important, another is that h264 had unnecessary rounding issues and adding bit depth hid them.
If you want a MPV-based player GUI on macOS, https://github.com/iina/iina is quite good.