You can certainly add your opinion re invasiveness in the comments section of the plant. I would encourage you to be specific re your location, often plants are invasive in one area but not another. I disagree with your statement that one shouldn't grow it intentionally anywhere, or that we should not include growing conditions in the database. It's a plant. It grows.
Edited to add: I would like to see our database include the area of origin for all plants, particularly for those that are not cultivars. I think it would be helpful.