It doesn't work. It hasn't been working for ages. Farage has had a bigger platform and been "debated" more than just about any other politician in the country. He appeals to emotion, not reason, so presenting better policies isn't going to win through.That binary narrative isn't helpful
You don't crush someone by excluding or silencing them. You crush them by being better than them in terms of your policies and presenting that to the electorate
Snakes like Farage know just the line to walk (most of the time) to seem quite reasonable ("just asking questions") and just stay out of trouble, while dogwhistling to those who are listening and acting all outraged when the fruits they sow come to ripen, by which time they've done their damage.
You want to subvert democracy, you don't get to partake in it.
We didn't used to allow these scum a platform and it worked just fine.