It makes sense once you realise that Chrome and Google benefit from increasing the complexity of web browsers. It means that new browsers cannot feasibly compete. It's basically an arms race of "how much mental shit can we throw in there"?
I understand why they do it (I think it's probably more about pushing the idea of a browser as the thing people use for everything than competition with other browsers TBH), but I definitely wouldn't say it "makes sense".
Just used in few days ago an it was very practical to use it instead of downloading some third party software. Since video conferencing apps are web-based it makes sense.
Who in their right mind thinks it makes sense to have a desktop screen sharing system... built into a browser?