That's just a regional/educational quirk. Classically-educated folks and older Brits are both quite likely to use the "needs no" version.

Most "LLM voice" quirks come from actual human writing styles, even if Claude et al have managed to distil those styles into something pretty horrific.

On the other hand, the way you can tell the title line was at least edited by a human, is the missing comma before "and needs no system prompt".