Re: Are fine artworks in European museums deemed NSFW by forum rules?
—Let’s not go that way. I will defend others’ posting of non-pornographic images, whether or not they are to my taste; and I find it regrettable that I even need to ask if forum policy prohibits the following image, which depicts male genitalia, and is hereby hotlinked directly from the Vatican Museums at a .va Internet address. The whole of Vatican City is the Pope’s workplace, subject to Catholic law; thus, this is “SFW” for the Pope.
In light of recent events, I don't think the Catholic Church should be held up as an example of what kinds of genitalia are appropriate to look at. 
It is not porn. It would be very foolish to claim that it is porn; this is not even a borderline, arguable question, such as with art-nude photography of a more or less sensual nature. I reasonably interpreted “NSFW” as a euphemism for porn, or almost-porn, or arguably-porn. —What does “NSFW” mean?
NSFW is not, and never has been, a euphemism for porn (or anything else). It has the plain meaning of the words: anything that is not safe to look at in at least some workplaces because it could get you fired. That category includes a lot more than just porn (but often does not include text regardless of content, because everyone knows that managers are I tried to look, so as better to understand your objection to forum policy. Cloudflare threw me a Google CAPTCHA. I don’t do those anymore, especially not for read-only viewing of a web resource.
Sorry. In my defence, it's becoming increasingly difficult to find image hosting sites that a) allow NSFW art; b) allow hotlinking; c) don't resize/recompress/otherwise mangle the original file; d) don't use Cloudflare or anything worse; and e) don't do anything even more obnoxious that I haven't listed. Here it is via the forum's image proxy: ip.bitcointalk.org/?u=https%3A%2F%2Fd.facdn.net%2Fart%2Ffoxpup%2F1572178064%2F1572178017.foxpup_btcntlk10yrs.png&t=619&c=82s3t2f-vi7JLA (NSFW)
My objection to forum policy is not so much that it reflects Western society's unhealthy obsession with genitalia and "female-presenting" nipples, but more that it's applied inconsistently and even in cases where it makes no sense, such as in the art contest.