> The ads are only shown while it's off, they're static black and white images, and 99% of the time they're for books. Totally unobjectionable

Speak for yourself. Aside from the principle, some of us don’t want to be advertised to in the comfort of our own home/bed/while we’re camping or whatever. Ads don’t have to be actively flashing, spaz-inducing insanity to be objectionable.

Not to mention that by definition an ad like this WILL be seen and attended to, even if only momentarily. That in itself is also objectionable.

Customers have proven they'd rather pay less for the option to see ads. As long as you can pay for an ad-less experience, I see no problem with it.