@Snowshadow
Yes that's a good solution, but I've received a lot of answers now and I think switching instances is a good idea.
They can read the posts even though you block this instance...
You have to make changes to the authorized fetch...or something like that
I am not familiar with such things, but it makes sense to me that it is the most effective if you switch to a server that says NO to threads quite openly.
π§΅