I challenge you to provide any proof for your assertion about “incompetent” doctors. Anecdotes are not the same as scientific data.
Hard to answer since no lawyer in Texas will pursue a case. The reason for the law was to bring down medical cost and I have yet to see it. The doctors pocket the savings and they live very well.
I would probably lose your challenge. However, from what I know of human nature, the weak and incompetent will seek as much cover as possible. This law offers less risk for their mistakes than other state laws.