Rsync for my mum, rsync for my sister, rsync for my lawyer, my teacher, my plumber, rsync for people who just want a folder with an icon that says it's working.

Rsync for people who just want a folder and it automatically shows up on all of their computers and phones at once. Rsync for people who are never going to use rsync because an ancient command line application with a zillion flags on it is just about as user hostile as you can get.

Is there a bunch of tech geeks who can rsync themselves? Of course there are, and this product absolutely, categorically and unambiguously isnt for them. But guess what? There's 100,000,000 people who both want their folders synced and have no idea how to use rsync (and dont want to). Thats what they are building, and that's who its for, and thats why the have 2.5 billion in annual revenue. Because they famously ignored the "iTs jUsT rSYnC" crowd, and built a product that actually works for 100 million people