Discrimination? That's an interesting viewpoint.
I look at it as recognition. I don't think it's meant to provide authority to anyone. Moderator's seem like they might have some authority but not Senior Members.
Also, I hadn't thought of it this way, but it could be a way of motivating (some) people to post more as well! That is, if you want the "status" of Senior Member, you can obtain it by just posting more.
Of course, hopefully your posts are helpful and positive and informational. Otherwise, it would just be spam! =D
I do see how the "New Member" title might cause you to wonder how your are being perceived. When a New Member posts, do Senior Members discount your message because you are "new" ? I guess I don't worry about it. I can't change how someone chooses to interpret my message. After people get to know me, they might discount my message just because of my name!
Plus, after all, I am new. Being new could also work the other way for me too. For instance, if I post something in the wrong place or break some other vague or unspoken rule, perhaps someone would see that I'm a new member and take a kinder, gentler approach and instruct me rather than criticise me!?
Or, someone could see that I'm a new member and decide to reply to a post simply because they want to encourage me.
Is that a valid, alternative viewpoint?