Just to clarify, it wasn't setting the default automatically without user input. It was only providing the option to change the default in the installation, with a checkbox if I remember correctly. Browsers (including IE) also have functionality to ask you if you want to change the default on starting the browser up, until you turn off that notification (or say "don't ask me again").
So, if the article is correct, neither of those can no longer work in Windows 10. Although, they will probably make an exception for IE asking you if you want to change it back to the default on startup.
Just to clarify, it wasn't setting the default automatically without user input. It was only providing the option to change the default in the installation, with a checkbox if I remember correctly. Browsers (including IE) also have functionality to ask you if you want to change the default on starting the browser up, until you turn off that notification (or say "don't ask me again").
So, if the article is correct, neither of those can no longer work in Windows 10. Although, they will probably make an exception for IE asking you if you want to change it back to the default on startup.