Yeah agreed; also, how often do people do benchmarks?
Me personally, I only bench around when the build is finished and not much after that; maybe bench again only if there's some significant hardware/software change (software change example being video driver that improves performance etc)
So, if passmark says "This graph counts the baselines submitted to us during these time period", then it probably mostly reflect new builds only. Which is still a significant data point, showing lots of AMD uptake (by enthusiasts), but not what the Techspot headline says/implies.