I remember when LW at least tried to prevent this by doing the 'epistemic status' thing (which was a bit silly as it depended on the honesty of the author but at least they tried, and I am annoyed they gave up on that).
Edit: I was looking up a source for what you said (and discovered Miller has deleted his twitter) and came across this: https://www.instagram.com/p/Cpk3gZqLkQ1/ "Ever wondered what it's like to be pro-life and in the medical sphere? Look no further and join Alexandra as she speaks to the UK's most prolife-ic (see what we did there) doctor against abortion, Calum Miller." yeah really something he should have disclosed.
Edit 2: lol ow god he didn't delete his twitter he actually renamed it from cdoggmiller to DrCalumMiller but forgot to update his own blog. 'cdogg' ow god. He is also a pretty vocal anti leftwinger (at least in his student days). Edit 3 No wait, he still is