@fishy_flavor I get your point, but if they are shy, they most likely will not write anything right anyways. Also as 13+ I would assume they are able to say so, if it makes them uncomfortable. And the follow-message does not seem to bother too many people, so I would argue it is only a very minor problem.
In addition to that, as @grosskopfgames said, it would be enough to hide it in the mod-view. That way not many people would see it, and one should assume that most mods were appointed because they are seen as resposible and are abe to deal with such situations.
Last but not least, my impression is, that the problem with trolls more urgent than the one with shy people. This would be a great tool for mods to see the messages clearer and react to it in a faster manner.

Would that make new viewers feel less welcome though? Often they may be shy, want to lurk for a while, or test the waters with typing a command once in chat to start and eel out how the chat is for them emotionally. Calling them out with an obvious badge could make them feel like an outsider and put undue attention n them.

Maybe a global badge by their name for the first 30 days that they can't edit away until after that 30 day mark.

They could even roll it into something fun like a global badge of how long that account has been on the platform - you just can't switch global badges or turn that one off until after 1 month. But it could also be cool to see people who don't have other global badges have badges like "5 years" or whatever. That would make it feel like they aren't just singling out new people while also helping mods/streamers a BUNCH.

This sounds awesome if implemented in the Modview user list, i would love to see that, maybe sorting the chat users by watchtime could be an helpfull addition to keep the mouse movement down ^^