o_o I've always liked the 100 myth bonus.
Then again, I've always been happy with players that are new or players that are familiar with the content but they haven't cleared yet.
So while the 100 myth is nice, I wouldn't necessarily be against them hiding the bonus or removing it entirely.

However, I will say that I always ask how much exp a player has. If they don't tell me, it is on them. They cannot get frustrated when they are told what they should be doing or at the very worst, asked to leave.
Thankfully, I've never had to ask a person to leave.
Anyroad, point being- please be honest about your experience with the content.
Regardless of what some people will say, being new to content is not a bad thing. You don't have anything to feel ashamed of.
Most people will work with you if you are honest.