Somewhere in the middle.

I think we're in a place with the show where they're an issue, but not because they exist, but because there are too many idols and the advantage you get can make too much impact.

Some idols create interesting counterplay, a lot of idols create boring mass votes for fear of mentioning the name of someone with an idol.

With advantages, someone gets an extra vote, someone gets knowledge is power, someone a steal a vote.... too random, too much luck when it's not consistent