Indeed. This has to rank as one of the worst branding mistakes in history. All TBL had to do was call the subdomain "web" but instead he went for the infuriatingly fussy and tongue-tying "www".
Alternates seem... bad. Instead of 'double u', you could say 'sexta-u', but that could lead to a slap in the face. Possibly the same for sextuple-u, which sounds like someone's going to tackle you then do some strange all over you.
If it wasn't for U and V switching in the middle ages, it'd be like the french language which says 'double v', and then 'sexta-v' could be OK.
Hmm, and yet, though of a different era, we got `cp`, `ls, `mv`, `rm` ....