"Opiner" Natural Recordings by Native Speakers
An opiner is a person who frequently expresses their opinions, usually in writing, such as in blogs, articles, or social media.
Opilionea is not a commonly used word in English. However, I believe you may be referring to opiliones, which are a type of arachnid that belongs to the order Opiliones. Opiliones are also known as harvestmen or daddy long legs due to their long, thin legs. They are typically found in dark, moist environments and are harmless to humans.
To opine means to express an opinion or judgment, often in a formal or professional setting. The term is often used to describe a written statement or a verbal expression of a person's views or beliefs. It can also imply a level of expertise or authority in the matter being discussed.