There's an update link that installs it with no opt out. It's been reported months ago. It has also been suggested that Adblockers will hide the "opt out" on the download page as an ad, but I tested this morning and it made no difference if I disabled AdBlock or not.
You can download the Adobe Flash Player installers directly by right clicking one (or both) of the following links.
I use those to avoid any bundled software.
This horrible behaviour still exist september 3, 2014 !!
I today got a request to update Flashplayer on my computer, Windows 7 64 bit.
It downloads a file and executing that DOES NOT GIVE ME ANY OPTION TO AVOID MCAFFEE!!
I did abort the installation, and I'm very thankfull that I have choosen to be notified of updates for me to install.
This is very bad, an extra layer of not wanted antivirus software can hurt both system stability and performance.
I do hope that this is an misstake that is adressed in timely manner for customers and notified to top management.