Easy for you because you're not new to Linux. If I asked the average user to type something similar in the Command Prompt in Windows I bet they would have just as much difficulty as they would in Linux.
If something doesnt "just work" then most cant be bothered with it.
I think the general consensus isnt "is this hard?" and more "is it an inconvenience and possibly difficult for the average windows user?" and I feel the answer is yes. For some this isnt an issue but Linux is always looking to expand their userbase and undermine the great Microsoft band even little things like this will prevent that every time.
Most of the time you search for the application you want, the developer website has the commands listed for adding the PPA, updating the PPA and downloading the application - You just copy/paste into the terminal, and quite often even this remarkably simple procedure isn't needed, you just download the .deb file and install in exactly the same way you would under Windows.
Bear in mind that I've only been running Linux full time for two years now. I don't understand this blind fear mentality of being almost incapable of learning something new and switching from Windows? However, it has to be stated that I'm from a time before GUI's even existed.
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