Plants vs. Zombies series
Details and Conditions
There is no statement from PopCap games. Please refer to the page on EA instead. You can monetize your YouTube videos and there are no limitations preventing Twitch subscriber-only streams. PopCap doesn't use any licensed properties (that I'm aware of) so there shouldn't be any issues using their games at all.
What it Means
Videos and streams ARE allowed
You CAN monetize on YouTube and Twitch with ads and subscriptions
You MIGHT be able to charge for access to your content (this would include Twitch "subscriber only" streams)
Any licensed IP or music not owned by the publisher are not covered by this policy