I have to disagree with the view point of the article however. I view technology as serving users. The author makes a great argument that Safari makes life more difficult for developers. I believe that Safari makes life easier for users. The latest privacy features and reporting are great.
I love my Linux laptops where I run Firefox and Chrome, but for day to day work, writing, and consuming books and digital content, I rely on the limited ecosystem of MacBook, iPad, iPhone, and Apple Watch.
If companies or web developers really want to use features not in Safari, please do show me a message that warns me to not use your web site. The digital world is a big place, and we all get to make our own decisions.