My definition of opt-in is:

"Click INSTALL to install this third party software"

I did not realize that this community had become so adverse to traditional software that asking a user before installing new software was now considered "revising definitions" and weird.

That's all I want: To be asked before third party software is automatically installed.

We used to call that adware/malware when a company bundled third party software without permission.

Now I guess we call it normal.