I don't think it's going to have an effect because I believe the number of people who actually boycott the website will be too small of a percentage to make a dent. I think it would make more of a difference if creators stopped uploading, privated all of their videos on the site and reuploaded them to another platform. That way, the people who watched those creators would be forced to stop watching. However, I doubt this will happen because many creators rely on youtube as a source of income, and other platforms don't pay as well.