The hat note as it is written is taking on the role of lead in which the article topic should be described defined or given context in accordance with WikipediaLead section The way the lead has been written using statements of opinion that are not sourced is just not acceptable  hat notes are not supposed to be used as commentary on the article subject In answer to Jaymax I recomended using the source cited above in the lead although this does not solve the issue of inclusion criteria as CurtisSwain says