Pageviews for Contribution pages stopped working a half a year ago. It was very useful as an indicator for hounding claims.
Indeed it seems around July 22, pageviews to Special:Contributions stopped being recorded https://tools.wmflabs.org/pageviews/?project=en.wikipedia.org&platform=all-access&agent=user&start=2019-04-13&end=2020-02-07&pages=Special:Contributions/MusikAnimal
I'm guessing it stopped recording certain kinds of pageviews, because Special:Watchlist for instance is still getting some, but there was a huge drop-off around July 22: https://tools.wmflabs.org/pageviews/?project=en.wikipedia.org&platform=all-access&agent=user&start=2019-04-13&end=2020-02-07&pages=Special:Watchlist
This is on the Analytics-side, not Tool-Pageviews, so I'm removing the tag. Thanks for the report!
There were many Special:X pages that were counted as pageviews (content consumption) when they should not had been so. This included pages like Special:Export (essentially a script) and also Special:confirmEmail (not a "page" in any way) . We removed most of them and just kept a small list of pages that are still counted. We do not disagree that counting views of "Special:Contributions/USERNAME" might not be useful, the point we are trying to make is that most Special:page pageviews should not be counted towards"wikipedia's content consumption" which is the intent of the Pageview definition. See: https://meta.wikimedia.org/wiki/Research:Page_view (and ya , we are fully aware that what gets defined as content is not 100% clear).
You can contribute to the future whitelist of Special:Page pages that denote "content contributions" that should be counted: T240676: Develop a consistent rule for which special pages count as pageviews