A diddums bashing vegans thread, I am so shocked

followed by a bunch of middle aged men commenting on their own habits to prove a point that ultimately won't matter when the universe unravels
Let me guess, lots of posts saying how vegans are hurting themselves etc etc and its not natural etc etc, loads of righties saying we need meat and its all ethical when it isn't etc etc, some guy commenting plants have rights too and a load of old usual recycled 'arguments' and 'points made' .
OCUK forum, very predictable
One day, we can discuss facts, but as long as we live in world where you think your opinion is as valid as a fact researched and verified by experts (an expert is a person who's dedicated their entire life to 1 singular subject as much as humanly possible, day in, day out)...we are not going to get anywhere.
Lets demo 2 facts and someone will argue with it:
1) Brexit sucked (fact, proven)
2) Reform will destroy the UK and democracy as we know it and have openly said they'll end the NHS for insurance based healthcare.
Now, fact wise, thats a fact, end of - someone will argue with it to push their opinion as trying to be equally valid when its not.
We don't have a facts problem in society, we have an opinion / political problem and everyone thinking they are equal to experts, often driven by their emotions problem.
How we as a society start to make decisions based on facts and logic and sensible processes - I have no idea, I'm not an expert, but its clear to see where facts become immediately nullified and twisted to uselessness.....perhaps because I was scientifically trained to see that more easily, however I dont have a solution on how to change peoples minds when their opinions are blatantly not reality.