I used the official binaries for a while, and this was a fairly awful experience, requiring me to grant permission to each component of GHC separately (twice). It all took about 20 minutes. For a little while now, I’ve been using GHCup quite happily – no problem there.
If it’s the path of least resistance, I’d be happy to have GHCup be the only recommended way to get GHC on a Mac, rather than expend time and energy to get notarization working so that the direct binaries work.