You are missing the point. They care when money is involved, and yet they failed to maintain a browser engine, which would have (for the better or for the worse) a central part of most people’s computing.
And yet, despite the browser being so important… They gave up and handed the cake to Google.
When the chapta is just a checkbox it means that chrome/safari has already ratted you out as a human long before.
They do also check mouse movements and the likes, tho. They also check how quick you are to answer