@tablejockey - Why should we ignore somebody's opinion because they are in entertainment or the arts? Should we also ignore the opinions of computer programmers? Farmers? Uber drivers?
Musicians and entertainers are human beings just like everybody else - some are smart, some are not; they are not machines that exist for the purpose of keeping people entertained, and their opinions are just as valid as anybody else's as long as they're kept as opinions and do not incite violence. Some opinions I agree with, some opinions I find contemptible, but there you go.
If you propose ignoring certain people's opinions in order to make the world a little calmer (a fine ideal, of course), everybody should ignore everybody else's opinions except their own. Don't know how desirable that would be even if it was possible.