It is very “British” with wit, puns, long running silly gags, in-jokes, smart headlines, sarcasm, and self-deprecating jokes.

However, The Register is usually technically correct and regularly breaks important news (good journalism). Minor technical (or grammatical) errors will be lambasted in comments.

Essentially, the style meshes well with it’s target readership, and they are very happy that anyone that doesn’t like the style auto-excludes themselves from the readership/community.