You're confusing two things. Chen2 is Miya's chink meguca based IB, she welcomes nearly everyone to use her IB. She's a twitterfag.
The board you linked is /meadhall/'s new address after I guess Miya kicked them out.
Seems back on meguca itself, now shamik.ooo, had the displeasure of hosting meadheads. When the German shooting happened, they were blamed for it, and rocket nuked 1) the board 2) and then the site.
Meguca admin separated itself from them.
I have yet to confirm if they have any form of responsibility regarding the shooting, but rocket is responsible for nuking the site&board.