Of course they acknowledge it. Is there an admissions person in this country who will simultaneously brag about the high level of its orchestra while maintaining that anyone who loves music can join?
Not sure why the idea that some level of skill is required for certain activities is disturbing or shocking. Whether it’s fencing or playing the cello or performing Macbeth set in contemporary America- some activities are set up for beginners (you can take fencing lessons at Brown! You can learn to play the cello!) and some are set up for people with some experience and skill.
That’s why there ARE so many clubs. Because the highly skilled tennis player likes to play against people who are similarly skilled, but the novice wants to play against other people who are just learning to serve.