- Dropbox aggressively suggests to create a new account to recipients,

- She's unknowledgable, so when a popup appears, she assumes it's mandatory. Hence she installed Dropbox without wanting it on her phone and PC and couldn't understand why so many steps are required to download a few photos. Also, "why does it try to upload all my folders ?!?" hence the spammy/virus impression.

- Dropbox sends an Android notification for every upload, which is both annoying and worrying to her, because she doesn't want her private life to go online.

I always assumed the mass went with Dropbox. Turns out the first example I see from that audience thinks it's a virus. Big lesson of user experience here.

It seems that any good business, in its quest to grow, will eventually start making annoying and user-hostile things. Dropbox definitely was cleaner and better in the past than it is now. It's a story I repeated by company after company - they reach peak quality, and instead of leaving things as they are, they have to "innovate" in more and more crap.

I'm one of the earlier users of Dropbox, so I still have a "Public" folder with an ability to create direct links to uploaded files. They've turned this feature off for new accounts some time ago - I guess because people started using Dropbox as a CDN. Still, it's one of its most useful features for me. I use the "Public" folder almost every time I want to transfer some files people - it lets the recipient avoid all that popups and captive forms bullshit.