Kobo's Misleading Advertising - Comics vs eBooks

[BGY11]

If I'm reading things correctly, it appears Kobo is now using false-advertising with regards to their "Read Freely" slogan. From their Read Freely page:

Kobo: An Open Platform

The eBooks you buy with Kobo are yours. You're free to read them on the most popular open devices. Or, you can buy books from other eBook retailers and read them with Kobo. The choice is yours.

On the main Kobo page, one of the banners states "Not being able to read your eBooks on other eReaders should be a crime. eBooks you buy with Kobo are truly yours. You are free to read your books on any open device - regardless of brand."

So, how do they justify having things like comics (which are still eBooks in my opinion) being exclusive to the Kobo Vox? For example, Hellboy Comic

You are unable to get a preview or view this book if you don't have a Vox. Even if you have another device with a color display (such as an Android tablet) this title won't appear in your library. Out of curiosity, is there a special comics app on the vox that would justify why these are different than regular eBooks?