I primarily use Safari, and only switch to Chrome if a site misbehaves; every time I do so, I'm aghast by the ads and popups I suddenly get everywhere - despite having uBlock installed. I refuse to take that as an acceptable state of browsing the internet.
Blink 3 times if you're being held against your will, dude. "Trillion dollar advertising company neuters ad blocking because it wants to protect you" is some "I love Big Brother" stuff.
Eh, Google controls the add-ons marketplace though. They control what add-ons are allowed, and they could even audit the add-ons for malicious code/behavior. Google, being a company that collects 75% of its revenue from ads, is being disingenuous by claiming this is a security-centered position. If security were the priority then the add-ons themselves should be inspected thoroughly, that much is obvious.