It is censorship but it is by a privately owned site - they have a right to this and we have agreed that in return for the services offered here, we keep within their terms of service. Not bowing my head means not using the site. When I can buy elsewhere, I do. But all in all, that's just not always possible - many things are only available here. If the merchants choose to sell at other venues, then I will buy from those. Otherwise, there is nought to be done.