Why would they block miner.pr0gramm.com, which is only used in one specific place (the pr0gramm site itself) where you need to explicitly press a start button to mine?
My point is that it's clear that you mine when you use their miner. You get premium points on the website as a reward. How is that shady? I think it's a perfect use case of where a web miner makes sense as an alternative monetization method.