Some of you here might be thinking, "well you can always use a passphrase while using chrome sync" to mitigate all privacy issues. I generally advocate use of a passphrase to people I know. BUT digging a bit into it I found that chrome's encryption is NOT STRONG AT ALL. Here[1] the author describes that brute force is possible within 4 days if the sync passphrase has 40 bits of entropy, with $1000 hardware. So with more expensive hardware, this can be done within minutes.
TBF even firefox is not excellent in this regard(based on the article), but it is much better.
This[1] seems to imply otherwise.
[1]:https://support.google.com/chrome/answer/165139#passphrase