While I don't agree with the technique, I would certainly not call it "tricking". Especially in your example, where it very clearly (more than most) describes what will happen if the boxes remain checked. People who blindly click "next", "ok", or "continue" buttons are tricking themselves, not being tricked. Especially when dealing with "free" software.
If the title of the page was "Would you also like to install Chrome and make it your default browser?" with a Yes and No button, then it wouldn't be a trick. Instead, the title of the page is "Complete your Avast program update" and the button is "Continue". Then, in very small letters in the lower left, it says what it's really going to do. This design is called a dark pattern and it is quite literally designed to trick you while remaining technically legal and "upfront" about what it is doing.
Yes, it is less scummy than burying it in an EULA and giving the user basically no notice, but it is still really scummy.
