I agree that Alonso was brave to do this before the GP start.
But I can't agree that other drivers wouldn't. Imho many F1 drivers divers would like to do the same and even race such machines. And most of them would be able to learn the skill needed. The teams won't allow this of course. Especially after Robert's accident.
All the more right for Alonso to grab the opportunity by the neck. He would never have got permission to push it if he had asked before, I reckon.