It's hard to take EFF seriously when they write so hyperbolically. What's clearly also the case is that Chrome extensions are one of the great modern security and privacy challenges --- to the point where multiple tech company security teams have people whose job it is just to screen them. Another detail that EFF doesn't want to share is that ad blockers are some of the worst offenders --- they demand maximal access…
But neither does google on the other hand, and they're the ones that can actually do something more about it than writing a blog post.