It all comes down to the repositories after all. Different distros have different update cycles and policies.
Oh, also some distros apply a little bit different graphics and customisation on the default setup.
After that, it is all the same. Distro choice does matter, but to the common user/newcomer is basically irrelevant.
why distro hop?
Fun waste of time, good way to learn how to setup a Linux system by doing that repeatedly.
why don't you use Ubuntu then?
It's a good system, go ahead with it. I don't like very much their customisations, but it is cool system after all.
why don't you recommend Archlinux to a newcomer?
He will have to read through a few guides and webpages in order to get a working system, compared to reading a single webpage which explains how to flash any other distro on a usb and be done with it.
why don't you use Kali Linux as a server?
The advantage of Kali is that it is designed to live in ram and everything you do is destroyed when you switch off the computer, this is a bit of a pain in the ass if you want to run a server.
why don't you use Batocera or SteamOS as your daily driver?
Don't even know what those are, but pretty much because I don't care: the system I have is good and I know there's little difference between distros.
why do you trust a community distro more than a corporate distro?
They're for different purposes (mainly). Redhat provides tech support. Canonical, well I don't know what canonical does. If you want good support for maybe a large installation with many computers, paying for red hat may very well be worth it.