My guess is the person who originally made this doesn't have all that much Linux experience and doesn't know that Kali is just Debian with lots of pre-installed security tools (and not intended as a daily driver)
To be fair, using Arch is kind of a different thing entirely. If you want to compare something to OSX UX/reliability, Mint or the like would be a more fair comparison. They're way more stable than rolling release, and even rr doesn't have that many issues.
Just to be clear, because the following could be misunderstood when posted alone: I'm not looking for an argument, use whatever you prefer. I'm just curious.
What use cases do you have that aren't available (or take lots of configuration) on Mint?
Generally speaking, you never want to use a low port (<1024) for anything other than the service assigned to it, because it causes all kinds of headache. Both on your side and on the other side. As for high ports, pick whichever one you prefer. They don't have any binding to a given service, though there are some conventions.
The thing that shows people you're running a VPN is not the port but the protocol header, so changing the port is pretty much useless if you want your ISP to not know you're running a VPN for some reason.
It'S a HaCkeR dIsTrO /s
My guess is the person who originally made this doesn't have all that much Linux experience and doesn't know that Kali is just Debian with lots of pre-installed security tools (and not intended as a daily driver)