In all honesty I never found the air embolism idea fully convincing - there wasn't clear physical evidence for it in most cases (I think there was maybe one x-ray showing air bubbles?), merely opinion/guesswork, and so I'm not overly surprised that someone finally came out of the woodwork to dispute it (although why that didn't happen during the trial, when it should have been raised, is a question).
BUT, the rest of the evidence leads to a big picture where it's really impossible to conclude anything other than murder, and the media really need to focus on the whole of it. The insulin cases, the other injuries, and particularly the twin cases where one had insulin and one possible air embolism - way too much coincidence for the same combination of injuries/ailments to happen in two separate pairs of twins. And the timings of collapses, especially when they magically happen as soon as LL returns from holiday, or when something's triggered her ire. The mother finding LL ignoring her baby screaming in pain and bleeding; the doctor finding LL standing over a baby mid-collapse.
There may be some cause other than air embolism for many collapses, or it may be air embolism despite the experts here, but the overall picture is clear: this is not a miscarriage of justice. Those who believe it is may want to go back and read the earlier threads as we followed the trial, as those went over the evidence in detail, which is much more convincing than the limited highlights we see reported now. I was very sceptical until the trial, and during the early part of it, but the weight of evidence as a whole was fully convincing by the end of it - but had I not followed in detail via these threads, I'd probably still be a sceptic, full information really matters.