And last time I looked (few months ago? and it had been so previous times I looked for at least the year before that) it was mostly trivially obvious spam, foll

And last time I looked (few months ago? and it had been so previous times I looked for at least the year before that) it was mostly trivially obvious spam, following simple patterns that will yield no false positives. This tells me that they don’t care at all: either they’re not doing any actual blacklist filtering based on content patterns (that is, unconditional removal or rejection, rather than merely flagging as probable spam for the channel owner to take action on), or their filters are unmaintained.