Even if you decide to believe that Google is doing this for the "right reasons" (improving performance for instance) it should still be a huge red flag. Due their conflicting business model they have no incentive to improve the adblocking interface later on. You can therefore expect the adblocking capabilities to degrade every time they can come up with a reasonable reason to do so while they'll never take the time to actually come up with a better solution.

Switch to Firefox people, it's not perfect but at least it's not Chrome.