Port forwarding wasn't much of a bar. The same stuffty servers existed back then, too.
And you're right.
But the amount of the same stuffty servers were under control.
AND, on top of that, even if you did forward your server, sometimes the user would screw stuff up and
then no one could connect.
Albeit this could mean good servers could die too, but usually people who were stuff at following directions were stuff at making servers.
This is the reason a 10 year old me couldn't run a stuff BL server in 2009.
I was always loving irritated with the Forwarding system.
Now a days though this is more of a teen to adult community running the game, so It's a bit weird thinking this game once had a stuff ton of kids playing at one point.