The only thing I can see being wrong with tics is when it leads to some form of harm, really. If it ends up causing an injury then it's probably a good idea to try and assuage or redirect it, and if the person themselves actually wants to fix them, then attempting to 'cure' them is good. I don't think forcing things like that on people really works, honestly I think it just ends up creating more problems. You don't lead a horse to water, and then try to get it to drink by shoving it's face in the bucket.