Well, if you are a low enough star rank, some people might not even see what you say if they have the star requirement turned on.
But mainly, it’s a sign of achievement. Blue stars (dark and light) are considers newbies (new players and/or not that skilled), and people don’t really respect them.
“Why don’t the higher ranks respect them?”, you might ask. The simple answer is, because the community (most of it at least) is toxic. When they were blue stars, they got bullied by the orange stars, and when they became orange themselves, they bullied the blue stars as revenge.
Not everyone, of course. It just seems like it, because people tend to focus more on mean things than nice things. For example, if I were to tell you that you look nice, and that you should also kill yourself, you most likely will think about the “kill yourself” part. But again, almost every Realm player says that, so we are probably just immune to it.