First and foremost, you are a newbie. If this Lv 35 monk job is your first then you are a newbie. There are many players out there in this game each with their own definition of what is and what is not. For the game to accommodate all definitions will be chaotic. So we just follow how the game defines it and not how you define it. So if for you believe a newbie or a noob is someone who knows nothing about the game and refuses to learn, that's on you. You can't force that to everybody else trying to play by the rules and the terms.

True that the party gets informed if there is a new player. Not all players though retain mechanics and might have to be aware if it it is the same dungeon popping up in duty roulette. You also don't need to lecture the rest of the population about what tanking, DPSing and healing is. We know.

Finally, not all servers are the same, there are servers where newbie players are taken care of instead of discriminating them. It's not the same scenario everywhere. If that is your experience, then I am sorry to hear but removing the sprout icon isn't the solution for that.

The rest of the players went through with it until they were able to get rid of it according to the game's terms. If we can do it so should you. You shouldn't be an exemption. At the end of the day, I only see someone who is just lazy to turn off an icon.