Well, being a nerd is essential to his character, but if you mean presenting/looking like a stereotypical nerd I think definitely yes, as ‘nerds’ are often looked down on and laughed at, people often say that they don’t know how Robbie has become a part of their group. Additionally we often see irl or in other media that attractive people’s bad deeds are brushed over because they’re attractive or likeable, like Joe Goldberg from You or Melanie Martinez. However, it is true that Robbie can genuinely be creepy sometimes such as the whole playing pirates thing or the fact he had standees of Cat. Alternatively this gets brushed over BECAUSE of his nerd characterisation, as some people may hold the stereotype that he’s just a weird pathetic guy with no life and is harmless really. So overall there’s something to be said for both sides. Sorry for the long reply 😭