Perhaps we mere mortals are not worthy ... please forgive my ineptitude ... i bow to your superior intellect and level of sophistication ...
If you indeed accomplished the task in two clicks, it is you that deserves some milk ... and a cookies as well.
I think part of the issue here is that your experience on the Adobe.com web site depends a lot on your 'user state'. I am a CC Complete subscriber, and if I'm logged in to my Adobe ID, I don't see the fairly prominent LR6 Standalone box on the main Lightroom page (lower right but not tiny at all). This is standard user experience policy -- i.e. don't show the user things that are probably not relevant to him, if you know who he is. Very common in modern UX design.
If I log out of my Adobe ID and re-load the web page as an anonymous user, the LR6 Standalone box appears. Now, Adobe doesn't know whether I have a CC subscription or not, and it shows me all my buying options. I discovered this difference a few months ago, and I now know to check my signed-in state if I want to know whether Adobe may be tailoring content for me or not.
Adobe also sells its products through different subsidiaries and even independent subcontractors in different parts of the world, so if you are logging on from, say, Timbuktu, and the Timbuktu web sales site wasn't properly coded prior to the LR 6 launch, you may not be seeing a LR6 standalone link, even though you were supposed to -- because the subcontractor made a coding mistake. Also very common in a complex multi-national commerce environment -- bugs like this get sorted out in the first few days after launch, typically.
I am one of those people who was able to find the LR6 standalone link easily on the main Lightroom page, and then quickly navigate the dropdown menus to find the upgrade price ($79). It did indeed take me less than a minute. (I may or may not get LR CC through my subscription; I've been on a perpetual version of LR5 up until now.) But I realize that there are various ways that a different user, hitting the Adobe web site in a different user state, might not see the same things I did.
In other words, everyone may be right!