[colordrops]

It's almost a certainty that they will continue down the slippery slope and start syncing data automatically in a future update. That sort of change has happened several times, so there is precedent.

[visarga]

But can't you protect your synced data with a passphrase?

[ntp85]

According to the Chrome privacy policy the synced data is inaccessible to Google if it is encrypted with a passphrase, even though this encryption seems to be weak: https://palant.de/2018/03/13/can-chrome-sync-or-firefox-sync...