Sure, it doesn't automatically sync your browsing history now, but we all know change happens gradually. It's just a "feature" to be enabled later.
I've never once signed into chrome in my life (on purpose). I don't want anything synced between browsers, I like to try and limit what gets kept in the cloud, and with this change they've simply just taken the option away from the user.
Yes, I'm sure that I'm in the minority, but I'm taking this opportunity to start switching to Firefox, switching my mail provider, and am hoping to send them a GDPR request to delete all of my data.
It's not necessarily just this issue that made me do it, it's just the tipping point for me that says.. "ok, this company has gotten too big off people's data, and i no longer wish to be a part of feeding that machine"
Just my 2 cents.