I can go on YouTube and get step-by-step instructions on how to safely wire an entire house. In many jurisdictions I would even be allowed to do that.
I can get instructions on how to completely redo a bathroom, down to the studs and up through the waterproofing and tiling. I can get instructions on how to do foundation repair, which might be a bit much for me but can help me ask the right questions to keep the contractor I hired honest.
These are all examples of experts acting as “traitors” to their particular group. In reality, technology enables both specialization and despecialization. Some people try to cling to their specializations and cry “class warfare” when threatened.