All of these topics are deleted as they say
"The topic or board you are looking for appears to be either missing or off limits to you"
, however, this is nothing new as people sometimes post everything in bitcoin discussion as this is the first board and main board which appears when we open bitcointalk. The mods usually will move the thread to the relevant section but if all of these threads were created by the same person then that should be dealt with differently. I think that's the reason mods deleted all of them.