The problem is that for most users, when their setup is completed they won’t need to play with it for a while so after that any time they need to install something new through the terminal it means losing time to find instructions again.
Which is why it’s better to understand what you’re doing than blindly copying pasting. You won’t need to remember these since whatever you want to install if it’s not on the repos you’ll have to google it same as if you were on Windows.
Also on Windows the steps are: Download the install file, double click it, follow the on screen instructions to automatically install the program, then every week or so go back to the website, check if a new version was released, if so download it and install it again. If the configuration would be destroyed by doing this first, make a backup first, if the new version is not backwards compatible for configuration move the existing configuration changes so that you get the new default after install and can apply your changes afterwards.
That’s closer to the truth, and you need to do that weekly for every one of the dozen or hundreds of programs a person has, no wonder people don’t update their programs on Windows and become susceptible to lots of exploits over time.
Also, read my option 1, which is what most websites offer you first, i.e. download a .deb and run it which is the equivalent of Windows, with all of its downsides. For example if you go to that website that OP posted and click on downloads you can select Windows, Mac or Linux, and you can download an installer that way and be done with it. But only Linux has a better option that takes a couple more steps but saves you lots of time in the future.