Is pretty as a prison dressed to be nice. Is pretty for instance if you do not need to do anything than consume someone else provided contents and your favorite services do not cease to exists or change usage terms overnight.
Google reader was nice, a day Google kill it, GitHub seems to be nice for some cohort of users, a day a political move between some countries makes your account locked, a day your ebook reader+service cease to exists with all books you never own but being convinced of the contrary, a day your smart vacuum cleaner stop to work because an AWS service have issues etc.
That's how pretty it is. Pretty to capture you, ugly once you discover you are trapped and than it's too late.
Oh, sure in mere tech terms you might run webapps locally, they are still NOT AT ALL pretty behind sugar-eye graphics, since integrate things, bend things is a nightmare that demand a gazillion SLoC for anything, while on classic CLI or better systems like Emacs you can do it in a snap. Not only: anything you'll learn on classic systems is valuable normally for a lifetime and more, anything you learn for the modern web might be valid for few years but generally last far less and no, you can't advance, you can only remain afloat keep learning the new crap on and on.