The difference for me is that, previously I knew I was multiple difficult steps away from having my browsing data uploaded to Google servers. That provided me a

The difference for me is that, previously I knew I was multiple difficult steps away from having my browsing data uploaded to Google servers. That provided me a level of comfort that doesn't exist anymore. With the new method I'm one misclick away from giving everything to Google. Add on to this, Chrome has been increasingly pushy with its sign in prompts. There's no reason to think it won't eventually be equally pushy with its sync prompts.