There is, I think, an important distinction, now that you have raised the point. In that the application of Sharia law makes a moral judgement on the content -

There is, I think, an important distinction, now that you have raised the point. In that the application of Sharia law makes a moral judgement on the content - censoring it for the promotion of, in their eyes, illegal content. In a work environment many things are not appropriate; even in the most liberal of societies pornography is much more of a private thing, enjoyed by smaller groups of people rather than being shared with the world at large. There are also other issues; like, for example, that pornography is connected with sexual excitement and sexual acts - all of which are also socially inappropriate in most workplaces (and public). So rather than a moral judgement it is a practical limitation designed to avoid awkwardness, or offence or distraction. That link, in particular, is a marginal case, where the pornography is incidental to the reason for being on the page. But within a corporate structure that doesn't matter. For what it's worth, no one will blink an eyelid where I work either.