Not to WOMM, but as a data point, it's working perfectly for me in Firefox on Windows with uBlock Origin. Is this one of those A/B test things where I'll get it eventually? I know the ad bomb rolled out slowly[0] and we know they're looking for a way to foil ad blocking without drawing bad press and regulatory scrutiny.
[0] https://news.ycombinator.com/item?id=23769291