> it didn't take long for ssh to take over the world

That doesn't seem to be accurate. Wikipedia says, by the end of "2000 the number of users had grown to 2 million"

> everybody was using ssh because there wasn't any alternative

I already listed TWO of the most popular alternatives.

> the mouse-jiggling thing... not specifically a PuttyGen thing. On linux

Parent specifically said "windows client installation." Putty was very common on Windows. PuttyGen specifically and prominently told the user to move their mouse... etc. etc.