Wow....
> I’ll go with Ubuntu 14.04 (Trusty)
This is extremely old. I am aware that the Tor project tries to keeps their defaults sane for any use, but someone has checked that the configuration here is still valid for this use?
Also, running tor as a root is bad idea, I don't think the client allows you to anymore (or at least warns you)
> This is extremely old. I am aware that the Tor project tries to keeps their defaults sane for any use, but someone has checked that the configuration here is still valid for this use?
Article was published in 2015. Seems 14.04 was the LTS, as the time of writing.