Indeed, thanks for linking!
Although note that at least some key points from those messages do exist already:
This is literally the current standalone installer 
That’s why I was really surprised to see that the standalone installer is heavily advised against, according to the official Julia install webpage (haven’t really read that page in a while). It’s clearly the easiest option for the most basic – and arguably the most common – scenario.
And I’m saying this as a juliaup user: it’s a nice tool, but for more advanced usecases.