I think it depends on what the said beginner is after. If they just want something that works then sure archlinux isn’t the best option, but if they want learn more about linux then there’s nothing wrong with installing arch. When I was new to linux, I found the beginners install guide on the archwiki to be very helpful and learnt a fair bit about how things work. I think you then have a good overview of how your system works and therefore have a better idea of what needs fixing when things break.