So first let me say I'm debating the points made, not having an argument. We've debated before, @Quarky00, I do so with respect for you.
Your first statement feels like it is generative of fear, and a bit hyperbolic ("posting blood pictures all over"). There are many things posted on this site the UK media would disapprove of, from links to and photos of hangings, to personal photos of cutting scars, let alone instructions for ctb methods. At what point does this site give the media the power to dictate content, or content placement, based on their past, present, or potential disapproval? It seems as if I made my case in my previous post, but now the bar has been raised to meet a higher standard, that of UK media; that your appeal is based on their authoritative power, which they do not have here, and is in fact derided on this forum; and that the small step I have suggested will lead to shit storm.
The second statement is a slippery slope fallacy, that is, that one small step will inevitably lead to an imaginary snowballing chain of events, therefore the step should not be taken. So, if this thread becomes a resource, members will start sharing photos of their blood, asking if it is brown enough, as happens with other methods. But leading to what awful thing(s), besides a media shit storm? How is it different from people posting photos of their SN supplies, or the ropes they buy, or the CO setups they build?
The third statement is that you would not make blood sampling a common practice. You have argued against it. What then do you suggest people do to ensure their SN is pure enough to cause methemoglobinemia if you do not approve of blood sampling as a common practice of testing, especially given the fact it is already commonly practiced? And just because you personally would not make it a common practice, is it therefore invalid for those who would and do find benefit from it?
If you would like it, I now respectfully hand the floor back to you.