Shrill is an adjective.
It is also a verb which is how I employed it, "Justify your shrilling...". It applies to the shrill sound of overly emotional defensiveness as opposed to presentation of facts and data.
Your further attempts to avoid providing "facts and data" will be appropriately ignored:
Expect the shills to bury this post in more noise as they desperately try to sell you some bag holding shitcoins.
I've seen you call people "a shrill" on numerous occasions. the actual word is "shill" not "shrill"
Calling someone "a shrill" just makes you sound retarded. Which is fitting because you are retarded