It would hardly matter because such users are probably still, and always were, an absolute minority of Firefox users and, more importantly, data-driven design o

It would hardly matter because such users are probably still, and always were, an absolute minority of Firefox users and, more importantly, data-driven design often assumes equality of users unless somebody has gone out of their way to justify violating that assumption. And the easiest/most common way to violate the assumption of user equality is to point at other data, such as "only 1% use that feature but 50% of those that do are whales who account for 90% of our income." But when the matter is less concrete because the value of one particular minority demographic is hard to pin down in the collected data (from what in the mozilla's telemetry data can you persuasively derive the value of power users who tell their friends and family to use firefox? Uncovering those relationships would certainly violate users' privacy..) then "data driven" decision processes will by default assume all users have equal worth.