It's really weird to apparently be personally part of a 0.01% group. I feel that usage rate must be suspect- in some Firefox version they gave out live bookmark

It's really weird to apparently be personally part of a 0.01% group. I feel that usage rate must be suspect- in some Firefox version they gave out live bookmarks by default, and surely more than 1 in 10,000 people still have those. Do we know what the telemetry actually measured?