I wish people would stop automatically recommending Algo, for instance it doesn't support Arch. It's the best if your platform is supported. Otherwise, it's easier to just manually set up everything.
Three of the top 20 list on distrowatch are Arch or Arch derivatives, including the number 2 spot. Its wiki is widely recommended as well for users of any distro.
"Niche" is a bad way to describe Arch.
It's probably more likely that a person interested in setting up WireGuard and their own VPN are running Arch or a derivative than any other distro.
I love Arch's wiki and the userbase's enthusiasm. But how in the world do you think Arch is the most probable distro base for a wg user? Using your distrowatch reference, 4 of the top 5 are Debian based.
I was looking at it from a perspective of who would be likely to install WG and set up their own VPN. This is me guessing (that's why I hedged and said probably), but I suspect there is great overlap in the tinkering and DIY attitude of Arch users and WG users.
Mostly I was responding to the statement that Arch was a niche distro.
I honestly think the algo ansible scripts just make it more confusing. I agree with you, setup isn't that hard, and you learn it better setting it up without ansible scripts.