Opinionista 

A person committed to the belief that opinions matter as much as facts and that her own ignorance is of equal value to others' expertise. Frequently found in the comments sections of news articles and other online fora.

The opinionistas responding to that article don't seem to have read past the headline.

Opinionista by RockRabbit September 15, 2015

Opinionista 

A person who in argument or comment
a. treats matters of fact as though they were matters of opinion,

b. considers their own uneducated opinion of equal value to the position of an expert, or
c. responds to a correction, a clarification or a disagreement in a manner more appropriate to personal attack than to discourse.

"I don't read the comments because comments from opinionistas erode my faith in humanity."

Opinionista by RockRabbit September 11, 2015

System Opinionstrator 

One who claims to maintain or support a computer system but in all actuality only has opinions on how it should be done and may in fact have no hands-on experience to back up said advice.

The chief system opinionstrator criticized how the system administrators actually handled the upgrade, nevermind he had never done an upgrade himself.

System Opinionstrator by splittingwedge November 8, 2007

Opinionata 

An opinion with candy inside; A sweet opinion.

Greg: "Hey, I think Game of Thrones is an awesome series."

Tom: "That's quite an opinionata my friend."

Opinionata by The Mordecai April 19, 2013

Opinionatapus 

A person who constantly changes their opinion about something.

He was so adamant about wearing a mask at the store. His cousin passed from Covid......Next day, he went clubbing with a Trump hat on. He believes in his constitutional rights. What an opinionatapus.

Opinionatapus by JTZebra July 20, 2020

OpinionSearch 

A crappy call-centre agency that employs financially desperate students and old people to do meaningless surveys over the phone, bugging people at dinner or on Sunday mornings.
OpinionSearch also has a tendency to not give two shits about its employees.

Should not be confused with telemarketing since telemarketing agencies actually go on the national no-call list.

1) I worked an 8-hour shift at OpinionSearch today and I want to slit my wrists.

2)Caller: Hi, this is (insert badly chosen fake name here) calling from OpinionSearch. We're looking for male members of your household between the ages of 18 and 34 who might be interested in a banking survey.

Client: *Click* or "I'M IN THE SHOWER!!!!!!"

Caller: Hello sir? Hello sir? Hello sir? Hello sir?...

3)Caller: Hi this is (actual name) calling from OpinionSearch. We're looking for female members of your household between the ages of 50 and 65 who might be interested in taking a survey on your sexual habits. Would that be you?

Client: Pervert! I have your name and I'm calling the police!

OpinionSearch by Scruffy from Canada February 18, 2010

opinionism 

All things involving opinions, sometimes including bias & obnoxious behavior.

"Because this is a country founded on opinionism (among other things too), the opinions of stupid people are taken into account. That is what's screwing up this country. It's always opinion VS opinion. Intelligence VS intelligence. Although it's free-will, it spreads like wildfire and there's no controlling it......now that I word it like this, you're probably thinking I'm an anti-American communist. Which is VERY far from the truth, you prejudmental bastard."
-me

opinionism by Dave July 14, 2004