Why? Other than point scoring (which apparently you do not do 
) I am not sure what you are hoping to achieve from your constant harping and whining on the subject. It’s happened and constantly trying to prove it was wrong on a lorry drivers forum won’t change anything.
Personally I was very neutral on the whole Brexit thing. I thought both sides had the potential to have good and bad about them. I agree with you 100% that Brexit in it’s current form has not necessarily been a good thing. But I also don’t believe whoever the government of the day has been since 2016 has had any desire to try and make a success of it, largely because none of them clearly wanted it.