Are all those overall market share numbers aggregated over device types? In the 2000s most internet users were sitting in front of a desktop PC, while nowadays

Are all those overall market share numbers aggregated over device types? In the 2000s most internet users were sitting in front of a desktop PC, while nowadays most web surfers are doing it from the palm of their hand. Of course, in that case people primarily choose their platform‘s native browser i.e. either Chrome or Safari. The latter is even forced onto its users (not that it is a really bad browser). So the decline of Firefox’s market share really tells us a story of the rise of the mobile web.