11 or 14 or whatever button hits is still ridiculous for a common function. That is VERY bad UI design. Unless it's something as of such ridiculous importance as the "tell Grandma to put her shirt back on" button, it shouldn't be 11 buttons in on something that takes as long to do something like that as an eInk reader.
Personally, I feel like I just kicked a puppy every time I accidentally buy a .tpz book (like tonight :sigh
. There are a number of books I'd currently buy in an instant if it wasn't in tpz format, but it is and I won't put my ebook money in Amazon's hands unless I know I can bail (as I learned when I bought an Adobe ebook from them YEARS ago and they quit supporting them.)