> I fully disagree

Disagree about what? You've certainly recognized that professional engineers have tried to usurp the term for their own devices, but that was already called out earlier. There was never a disagreement there. The word "engineer" predates societies of engineers by several hundred years or more so there is no claim that those societies came up with it, so there is nothing to disagree about there either.

> Doing a brick layer training doesn't make one a construction builder.

If someone goes to a bootcamp and then, following that, sits on the couch watching TV until their end of days then you're right that they would not be an engineer. But I have never seen anyone claim that they are something when they aren't doing it. Someone who worked at McDonalds when they were 14 years old and never again don't still call themselves a fast food worker when they are a 50 year old CEO, so I am not sure this take logically follows. It was implied that there is associated action.

Following Leonardo Da Vinci footsteps requires more than what a React Native bootcamp provides.