I shall do me. As I'm right and you're not! 🤣
Had it been a thread about white walls which somebody came in to say they found boring, that would've been rude. But it's a thread about wallpaper, so not rude at all.
The poster who called somebody else's choice hideous was very rude, as it was a personal comment on that person's choice.
You appear to be looking to be offended. You just look weird / daft, tbh.