On the main page of piwik.org it advertises that it is "easy" to embed stats in your website.
"Embed your stats in your website!
You can very easily embed your graphs in your blog or website or dashboard:"
This is not true and should be removed.
An acceptable solution should be posted to those bugs or the claim that embedding charts into your site is easy should be removed or at least, clarified to say that your entire piwik installation must be visible to the public.
In those tickets, we have explained why the current functionality is not a bug.
On the widgets screen (Widgetize), the view access requirement is clearly stated.
We will provide an alternate method in #283.