Well, sometimes you have to tear down the fences to bring about meaningful change based on first principles. Otherwise, we are only empowering the gatekeepers who have all the incentive in the world to persist with the status quo.
Its entirely possible that the fence was put there for an extremely valid reason, or that you must mitigate a separate issue before removing it. This assessment can be completed using a first principles approach, and the fence can be removed afterwards. Removing the fence then learning why it was there can be a painful experience for you and those around you.
If someone puts up a fence without explaining why it's there, they deserve to have their fence torn down.
Uhh no, because your punishment rampage will be putting other things in danger.
First, understand why the fence is there. THEN tear it down if it makes sense to do so. That's the whole point, and it was thoroughly explained in the article.