The RFC is long obsolete. The world changed a lot since 1990.
Modern server “cattle” style naming, which I assume you have in mind, is actually explicitly mentioned as a reasonable idea in the RFC text.
Eg, nothing wrong with naming the webserver simply "web". Particularly in modern times where it's going to be a VM/container, and never do anything else.
Also nothing wrong with naming your laptop after yourself. Laptops weren't much of a thing in 1990, these days everyone at my company has their own. And seeing a login or packets on tcpdump from "bob.example.com" is very much helpful.
Until you have more than one webserver.