[rootusrootus]

The charitable explanation is "because that is where most people are." Network effect is real.

[platevoltage]

Was that ever true, even during the Twitter days?

[rootusrootus]

I guess that depends on the scope. For people who like that flavor of social media, Twitter was where it was at, and X remains the main place. But if the scope is 'of all people' then of course it is not true -- most of us (myself included) never got into Twitter or any of the similar social media sites.