Yeah, app developers definitely got the worst of it. I haven't seen many articles where users have complained though.

As a very occasional visitor to the site, with no account, I've found the changes discourage my casual exploration of the service. Mnay actions lead to a sign-up / registration page. Much like G+ on Android.

Users were basically unaffected by the changes. Now when they're mucking with the clients (like the iPad app), its different.