I’d like to point out that I have been writing software since 1979. I have used open source software exclusively since 1995. In 1999, I wrote the first 100% open source government to business service in Latin America, using RedHat, Apache, MySql, Java Servlets and a thing a bit like Ajax that I invented myself to provide performant access over 28.8kbps modems.
I’d also like to point out, that if you have a look, I have contributed a quite significant number of posts in this forum that deliver clear explanations of issues the official documentation has never covered. A few examples :-